Luxman LX-380 User manual

Owner`s Manual
VACUUM TUBE INTEGRATED AMPLIFIER
LX-380

Contents
Precautions ············································································································· 1
Features of This Unit································································································ 2
Names and Functions······························································································ 4
Connections ·········································································································· 10
Operations············································································································· 14
How to Use Remote Control·················································································· 15
Block Diagram······································································································· 16
Specifications ········································································································ 17
Before Asking for Repair Service············································································ 18

VACUUM TUBE INTEGRATED AMPLIFIER LX-380
1
Precautions
Installation place
Install this unit in a location where good ventilation and heat
radiation are assured.
Especially, the installation of this unit where the direct sun-
light is present, where the temperature rises excessively
high such as close to a heater, or where it is humid or dusty
may cause a malfunction even if heat is efficiently released.
Therefore, do not install this unit in such places.
Ventilation holes
Do not block the ventilation holes of the top and bottom
panels. If the amplifier is installed on a rack or the like, se-
cure ample space for cooling and leave the door open. Do
not pile up other things on the amplifier and never put arti-
cles on it. Failure to observe this may cause a malfunction.
Note:
For heat dispersal, do not install this equipment in a con-
fined space such as a book case or similar unit.
*Note
Wall
* *
*
Precautions in connecting with other
components
When connecting this unit to input devices such as a CD
player, an SACD player, an analog player, a tuner, and a re-
corder, be sure to turn off the power of this unit and all other
connected devices. Failure to observe this may generate a
strong noise resulting in speaker damage or cause a mal-
function. The pin-plug to be inserted in each input terminal
of this unit shall be pushed in firmly. If the grounding terminal
is inadequately connected, noises including hum may be
generated, resulting in an adverse S/N ratio.
Batteries
Warning:
Batteries used for the remote control shall not be exposed
to excessive heat such as sunshine, fire or the like.
Cautions in connecting speakers
When making speaker system connections, exercise extra
care not to short-circuit between (+) and (–) of the speaker
terminals and speaker input terminals of this unit. If a large
signal is applied to the amplifier with its circuit left short-cir-
cuited, a large current may be passed through the output
circuit and cause a malfunction.
The sound is not generated shortly after
the power supply is turned on.
This amplifier is equipped with a time muting circuit in order
to separate the output circuit. Therefore, no sound will be
generated shortly after the power supply is turned on.
If the volume control is set to a high sound level before the
time muting circuit is canceled, a large sound is suddenly
generated. Please be advised that the volume control shall
be set to a low level at first and adjusted after the sound
comes out of the speakers.
Repair and adjustment
When repairs or adjustments are needed, please ask the
dealer where you bought the unit.
Cleaning
For cleaning, use a piece of soft cloth to wipe the unit such
as cleaning cloth. When the dirt is hard to remove, use a
small amount of neutral detergent to wipe, and then wipe
the unit with dry cloth. Do not use a solvent like benzine
or thinner because such substances can often damage the
exterior.
Safety caution
Caution
• This unit is heavy. Be careful when unpacking, carrying, and
installation.
• This unit is a vacuum tube control amplifier. Be careful not to
touch this product with your bare hand because it gets hot
when the power is on. For safety, do not use this product in a
place where children or unchained animals are present.
Hot
surface
mark
HOT SURFACE. DO NOT TOUCH.
The top surface over the vacuum tube may become
hot when operating this product continuously.
Do not touch hot areas, especially around the “Hot
surface mark” and the top panel.

2
Features of This Unit
Wooden case
A traditional square-shaped wooden case is used.
Beam tetrode connection /
push-pull output stage
Push-pull configuration with 6L6GC beam tetrode connec-
tion
Phono amplifier
This unit is equipped with a phono amplifier that is com-
patible with the MM/MC cartridge to achieve analog record
playback in a high-grade level without adding a dedicated
phono amplifier.
Tone control
A bass/treble type tone control function that enables fine
sound volume adjustment with a 3-step turnover frequency
selector switch is equipped.
LECUA-LUXMAN Electric Controlled
Ultimate Attenuator
An electrically controlled attenuator LECUA is mounted. It
attenuates the signal level by combined resistances.
By using an exclusive solid-state IC and controlling the at-
tenuator to the level equal to the angle of the volume knob
position, you can feel the similar touch of our traditional slid-
ing-type volume control.
Subsonic, monaural function
A subsonic switch that controls woofer shaking generated
by warp of the analog record, and a monaural switch to be
used during monaural playback are provided.
Headphone output terminal
This terminal allows you to casually enjoy music with head-
phones.
Separate function
This unit is equipped with a separate switch to separate the
pre-amplifier and power-amplifier each other that enables
the bi-amp connection adding a power-amplifier and the
coexistence with an AV system.
Selector switch IC
Selector switch IC with high sound quality, which is used in
the top-end control amplifier, C-900u, improves the sepa-
ration and crosstalk performances.

VACUUM TUBE INTEGRATED AMPLIFIER LX-380
3
Input/output for recorder
An input/output terminal to connect a recorder such as a
tape deck is equipped.
High sound quality relay
Reliable design for the signal switch is achieved by using an
audio-specific relay of high durability.
Machined aluminum knob
Classical type machined aluminum control knobs with dig-
nified look are furnished.
18 mm pitch RCA terminal
All of RCA input/output terminals are 18 mm pitch allowing
high-performance line cables with large plugs to be con-
nected.
Large type speaker terminals
Speaker terminals (A and B systems) of inline layout (with
same characteristics for right and left), which is compati-
ble with Y lugs for easy connection with extra-thick speaker
cables.
Aluminum remote control
The high-grade remote control, which is encased in alumi-
num, can control applicable CD/SACD players as well.
Highly reliable design
Both prolonged life and highly reliable design of vacuum
tubes have been achieved by providing operating condi-
tions of vacuum tubes with some allowance.

4
Names and Functions
1. Operation switch (OPERATION)
Turns on and off the power. When wiring or connection is
performed, be sure to turn off this switch. When turning on
the power switch again after turning the unit off, wait for
more than one minute.
2. Low frequency selector switch
(FREQUENCY/Hz)
Toggles to select frequencies from 150 Hz, 300 Hz, 600Hz.
For example, when 150 Hz is selected, the frequencies of
150 Hz and lower can be adjusted by the tone control for
bass.
3. High frequency selector switch
(FREQUENCY/Hz)
Toggles to select frequencies from 1.5 kHz, 3 kHz, 6 kHz.
For example, when 1.5 kHz is selected, the frequencies of
1.5 kHz and higher can be adjusted by the tone control for
treble.
4. Line straight switch (LINE STRAIGHT)
Enhances the purity of the sound quality by bypassing the
balance control circuit, tone control circuit, or the like.
OFF: Line straight off/bypass off
ON: Line straight on/bypass on
When the line straight switch is set to on, the balance con-
trol, tone control, subsonic, monaural and loudness cannot
be adjusted and the mode selector does not function.
5. Loudness switch (LOUDNESS)
OFF: Provides the normal state.
ON: Corrects the characteristics of human ears that
causes difficulty in listening to low-pitched and high-
pitched sounds when the sound volume is low.
* When the line straight switch is on, this function will be
“off” and does not function.
2
19 18 17 16 15
4 5 6 7 8 11 1210 141 9 133
Front panel

VACUUM TUBE INTEGRATED AMPLIFIER LX-380
5
6. Subsonic switch (SUBSONIC)
Toggles the ultra-low frequency cutoff function on and off.
OFF: Provides the normal state.
ON: Cuts ultra-low frequencies out of audible range to
prevent ultra-low range noise from adversely affect-
ing audible range. This function is significantly effec-
tive especially when an analog record is warped or a
woofer is shaking owing to ultra-low range vibration.
* When the line straight switch is on, this function will be
“off” and does not function.
7. Mode switch (MODE)
Changes the output mode.
MONO: Mixes the signals from right and left channels to
provide monaural playback.
STEREO: Provides normal stereophonic playback.
* When the line straight switch is on, this function will be
“stereo” and does not function.
8. Cartridge selection switch
(CARTRIDGE)
Changes the gain level of the equalizer amplifier (amplifier
circuit required to play an analog record).
MC: Selects the MC (moving coil) type cartridge of low
output voltage.
Be aware that the sound volume becomes higher
and unbalanced sound without high frequencies is
generated owing to the impedance when “MC” is
selected during use of the MM type cartridge.
MM: Selects the MM (moving magnet) type cartridge of
high output voltage.
9. Pilot light
Blinks in the time of muting mode when the operation
switch is turned on and lights up when the operation state
is activated afterward. This indicator blinks when the unit is
in the muting mode or when the volume is adjusted with the
remote control.
10. Input selector (INPUT)
Selects an input device from the devices such as a CD/
SACD player and a tuner connected to each input terminal.
This selector has 5 positions consisting of PHONO, LINE-1,
LINE-2, LINE-3, and LINE-4 that correspond to each input
terminal on the rear panel. To select an input source, set
the selector to the position of the source to be played back.
11. Monitor switch (MONITOR)
Selects the monitor input terminal (MONITOR) on the rear
panel.
ON: Enables to play back the data from the recorder.
OFF: Enables to play back the data from the source se-
lected with the input selector.
12. Separate switch (SEPARATE)
Separates the pre-amplifier and main-amplifier each other.
OFF: Uses this unit as a normal integrated amplifier.
ON: Feeds external signals from the MAIN IN terminal on
the rear panel to the main-amplifier section.
When the separate switch is set to ON, the volume control
of this unit cannot adjust the volume of the speakers con-
nected to this unit. Volume adjustment shall be performed
at the input device side such as the control amplifier con-
nected to the MAIN IN terminal.
Entry of direct output into the MAIN IN terminal from a CD
player or other devices that cannot adjust sound volume
constantly provides a full power state and accordingly re-
sults in the risk of speaker damage.
For such input devices, be sure to use a control amplifier
equipped with the sound volume adjustment function as a
relay, generate sound through the speakers with volume
lowered, and adjust the volume to your favorite level. When
arranging the wiring, be sure to turn off the power of this
unit.
* Pre-out terminal (PRE OUT) is kept output regardless of
on/off state of the separate switch.

6
Names and Functions
13. Remote sensor (R)
Receives signals from the accessory remote control. Do not
block the front of the sensor.
14. Volume control (VOLUME)
Adjusts the sound volume. Sound is not generated when
this control is rotated counterclockwise to the end, and
then, the sound volume gradually becomes higher when
the control is rotated clockwise as follows: mute → –87 dB
→ –86 dB →...... →0 dB in steps of 1 dB. Also, it can be
operated with the accessory remote control.
15. Balance control (BALANCE)
Adjusts the balance of sound volume between right and left
channels.
Rotating this control counterclockwise makes the left sound
volume enhanced, and rotating the switch clockwise makes
the right sound volume enhanced. This control shall be set
to the center position under normal conditions, and rotated
to make adjustment if necessary.
When the line straight switch is set to on, this control does
not function.
16. Speaker selector (SPEAKERS)
Selects either of 2 speaker systems, A or B, located at the
rear panel.
OFF: Activates only headphones. No sound is generated
from any speakers.
A: Selects the A system speaker terminal.
B: Selects the B system speaker terminal.
A+B: Simultaneously activates both A and B system
speakers. When both speaker terminals are simul-
taneously used, select speakers with impedance of
8 ohms or more because both output terminals are
connected in parallel.
17. Headphone jack (PHONES)
Insert the headphone plug into this output jack. Even when
the plug is inserted, signals to the speaker output terminal
are not interrupted. Accordingly, to listen to sound with only
use of headphones, set the speaker selector to “OFF”.
2
19 18 17 16 15
4 5 6 7 8 11 1210 141 9 133
Front panel

VACUUM TUBE INTEGRATED AMPLIFIER LX-380
7
18. Tone control for treble
TONE CONTROL (TREBLE)
Controls the level of tone range higher than the selected
one with “3. High frequency selector switch”.
When this control is set to the center position, flat frequency
characteristic is obtained. Rotating this control clockwise
makes the high frequency range enhanced, and rotating
this control counterclockwise makes the high frequency
range attenuated.
When the line straight switch is set to on, this control does
not function.
19. Tone control for bass (BASS)
Controls the level of tone range lower than the selected one
with “2. Low frequency selector switch”.
When this control is set to the center position, flat frequency
characteristic is obtained. Rotating this control clockwise
makes the low frequency range enhanced, and rotating this
control counterclockwise makes the low frequency range
attenuated.
When the line straight switch is set to on, this control does
not function.

8
Names and Functions
20. Signal ground terminal
(SIGNAL GROUND)
Is a ground terminal for devices to be connected to this unit.
These terminals are used to reduce noises when other de-
vices are connected, and are connected to an analog player
or a tone arm. This terminal is not designed for safety.
21. Phono input terminals (PHONO)
Are input terminals to connect RCA pin-plug cables from
an analog player or a tone arm. Some alalog players have
internal phono equalizers. If that is the case, turn off the
equalizer amplifier within the player.
Do not connect a CD player or other devices whose output
level is high to this terminal. Normal playback cannot be
provided due to sound crack.
* At the time of shipping, a shortpin plug is inserted to avoid
noises. Remove the shortpin plug before using the unit.
Also, do not insert the removed shortpin plug to the re-
cord output terminals (REC OUT) or Pre-out terminal (PRE
OUT). No sound will be generated.
22. Line input terminals
(LINE-1, LINE-2, LINE-3, LINE-4)
Are used for high-level signal inputs from a CD/DVD player,
an SACD player, a tuner, a video deck, a TV, and other such
devices. These input terminals offer the same functions.
23. Record output terminals (REC OUT)
Are used to transmit output signals for recording onto the
recorder. These terminals are connected to the line input
terminal of the recorder. The input signal selected with the
input selector is outputted.
Do not insert shortpin plugs into REC OUT. No sound will
be generated.
24. Monitor input terminals (MONITOR)
Are used to connect with the playback output terminal of
the recorder. These terminals are connected to the line out-
put terminal of the recorder. These terminals will be select-
ed when the monitor switch is turned on regardless of the
selected position of the input selector.
21 22 23 24 25 26
27 28
20
Rear panel

VACUUM TUBE INTEGRATED AMPLIFIER LX-380
9
25. Pre-out terminals (PRE OUT)
Provide the output of the preamplifier section. A bi-amp
connection can be performed with a combination of an ex-
ternal power amplifier because this terminal always provides
output regardless of the separate switch setting.
Do not insert shortpin plugs into PRE OUT. No sound is
generated.
26. Main in terminals (MAIN IN)
Provides input to the main-amplifier section directly when
the pre-amplifier and main-amplifier are separated by set-
ting the separate switch to on.
* The sound volume cannot be adjusted. Adjust the volume
at the input device side.
27. Speaker terminals (SPEAKERS)
Connect speaker systems.
The right speaker terminals shall be connected to the R
side, and the left speaker terminals shall be connected to
the L side in consideration of the polarity.
General type
terminal
* It is possible to insert cables from below
as well as from above.
28. AC inlet (AC IN)
Connects the accessory power cable. The power shall be
supplied from a household wall socket.
Note:
This symbol represents CLASSII apparatus with
functional earth terminal. (Signal ground terminal)

10
Connections
RECORDER
ANALOG PLAYER
CD/SACD PLAYERCD PLAYER
SPEAKER SYSTEM
(
A
)
+
L R
–
+– +–
SPEAKER SYSTEM
(
B)
L R
–
+

VACUUM TUBE INTEGRATED AMPLIFIER LX-380
11
Before connecting
Before connecting other devices, connect the jack side of
the accessory power cable to the AC inlet of this unit.
When connecting, turn off the power supply of this unit and
the power supplies of auxiliary devices to prevent unex-
pected accidents that may be caused by noise.
How to connect power supply
Use the accessory power cable to insert the AC plug in an
outlet on the wall in the listening room.
How to connect a CD player, SACD player,
D/A converter, tuner, or other devices
Connect between the output terminals of a CD player, an
SACD player, a D/A converter, a tuner, or other such input
devices and the LINE-1 input terminals of this unit with 2 (R
and L) pin-plug cables.
For LINE-2, LINE-3, and LINE-4 input terminals, connection
in the same fashion as the LINE-1 terminals provides the
same playback.
How to connect speakers
Connect the left-channel speaker to the L terminals of this
unit and the right-channel speaker to the R terminals.
Securely connect the !terminal of the speaker system to
the speaker terminal !(red) of this unit, and the @terminal
of the speaker system to the speaker terminal @(black) of
this unit.
If the !and @terminals are reversely connected to either
of the right and left speaker systems, the acoustic phases
of the sound reproduced from the right and left speaker
systems are also reversed. In such a case, be aware that
the sound level in the low range will be reduced and the
acoustic stability will worsen, thus normal stereo playback
cannot be achieved.

12
Connections
RECORDER
ANALOG PLAYER
CD/SACD PLAYERCD PLAYER
SPEAKER SYSTEM
(
A
)
+
L R
–
+– +–
SPEAKER SYSTEM
(
B)
L R
–
+

VACUUM TUBE INTEGRATED AMPLIFIER LX-380
13
How to connect an analog player
Connect between the output terminals of an analog player
and the PHONO terminals of this unit with 2 (R and L) pin-
plug cables.
For some types of players, the ground wire from the phono
motor or the tone arm should be connected to the ground
terminal of this unit.
The phono equalizer of this unit is compatible with both the
MM and MC cartridge. If an MC cartridge with low output
voltage is used, set the cartridge selector on the front panel
to the MC position.
The output from an analog player equipped with a phono
equalizer or from an independent phono equalizer shall be
connected to the line input terminals of this unit.
How to connect recorder
1. Connection to MONITOR terminals (playback)
Connect between the line output terminals (LINE OUT) of a
recorder and the monitor terminals of this unit with pin-plug
cables in consideration of L and R. When the monitor switch
on the front panel is turned on, the playback of the recorder
will become possible.
2. Connection to REC OUT terminals (recording)
When the sound source from the various input devices is
played back, such as the PHONO or LINE terminals of this
unit, the signals are also provided to the REC OUT terminal.
Connection between the REC OUT terminal of this unit and
the line input terminals (LINE IN) of the recorder with pin-
plug cables is required for recording on the recorder. You
can enjoy listening to the sound from the speaker system
and record the sound at the same time. These output sig-
nals for recording are not affected by the control functions
such as the volume control and tone control functions.
When you need not toggle an input source to be record-
ed (especially when a recorder connected to the recorder
output terminals is recording), do not operate the input se-
lector.
Do not insert shortpin plugs into REC OUT. No sound is
generated.
When a CD recorder, tape recorder, or other devices are
connected, be aware that the playback sound volume be-
comes low or no sound is generated if the device decreas-
es the impedance of the line input terminals of the recorder
extremely or causes short-circuit on the line input termi-
nals when the recording switch is set to on.
How to connect PRE OUT/MAIN IN
terminal
Either the pre-amplifier or main-amplifier can be separately
used. When the pre-amplifier or main-amplifier is separate-
ly used, set the separate switch on the front panel to on.
When only the pre-amplifier is used, connect the PRE OUT
terminal of this unit to the input terminal of another pow-
er-amplifier, and when only the main-amplifier is used, con-
nect the MAIN IN terminal of this unit to the output terminal
of another control-amplifier.
When this amplifier is used without separating between
pre-amplifier and main-amplifier, set the separate switch
on the front panel to off, or no sound is generated.
Do not insert shortpin plugs into PRE OUT. No sound is
generated.
The PRE OUT terminals keep outputting regardless of on/
off state of the separate switch on the front panel.

14
Before operation
1. Ensure that the connections are correctly performed. (Nor-
mal playback cannot be achieved with wrong connections
of R, L, !, or @.)
2. Whenever the power is turned on and off or the input se-
lector is changed over, set the volume control to the mini-
mum position in advance.
Playback procedure
1. Press the operation switch to turn on the switch after en-
suring that the volume control is set to the minimum posi-
tion.
2. Select a source to be played back with the input selector
or with the monitor switch.
3. Adjust the sound level with the volume control.
4. Operate the line straight switch, balance control, and tone
control according to the source to be played back.
How to operate line straight switch
The line straight switch is used to play sound with the short-
est signaling route to enhance the purity of the source select-
ed with the input selector. When this switch is set to on, the
balance control, tone control, subsonic, monaural and loud-
ness are bypassed.
How to operate balance control
The balance control allows users to adjust the balance of
sound volume between right and left channels. When the bal-
ance adjustment is not required, the balance control should
be set to the center position.
When the line straight switch is set to on, the balance con-
trol does not function.
How to operate tone control
This unit has the tone control function for the low frequency
and high frequency ranges.
The low frequency tone control (bass) is a function to adjust
the tone range lower than the selected one with the selector
switch (FREQUENCY/Hz for low frequency). The tone con-
trol is set to flat frequency characteristics at the center posi-
tion. Rotating the control clockwise makes the low frequency
range enhanced, and rotating the control counterclockwise
makes the low frequency range attenuated.
The high frequency tone control (treble) is a function to adjust
the tone range higher than the selected one with the selector
switch (FREQUENCY/Hz for high frequency).
The tone control is set to flat frequency characteristics at
the center position. Rotating the control clockwise makes
the high frequency range enhanced, and rotating the control
counterclockwise makes the high frequency range attenuat-
ed. For both the low frequency and high frequency ranges,
the right and left channels interlockingly function.
When the line straight switch is set to on, the tone control
does not function.
How to record a source
1. Select a source to be recorded with the input selector.
2. Set the recording switch of the recorder to the recording
standby state.
3. Play the source to be recorded and set the recorder to the
recording state.
* Operation of the volume control, tone control, or balance
control does not affect the recording signals.
Operations

VACUUM TUBE INTEGRATED AMPLIFIER LX-380
15
How to Use Remote Control
29. Volume (VOLUME i, o)
Adjusts the sound volume. The sound volume is lowered
with oand raised with i. The volume control of the main
unit will turn.
30. Mute (MUTE)
Mutes the sound temporarily. Activation of the mute func-
tion causes the pilot light on the main unit to blink, and no
sound is generated. Pressing this button again to cancel the
mute function allows sound to be generated.
31. CD/SACD player operation switch
(CD/SACD PLAYER)
This switch is used to control the corresponding CD/SACD
players.
As of October 2016, the corresponding CD/SACD players
are D-380, D-08u, D-06u, D-05u, D-08, D-06, D-05, D-10,
D-7, D-600, and D-700S.
Remote control (RA-25)
30
29
31
Remote control
The remote control shall be aimed at the remote sensor (R)
of this unit within the specified angle range shown in the
illustration below.
Dry cell battery
[How to load dry cells]
1. Put your finger on the battery cover claw located behind the
remote control. The battery cover can be opened by
pressing and sliding it downwards.
2. Put supplied 2 AAA batteries in the battery case as shown
in the illustration.
3. Close the battery cover.
* When the batteries start to lose power, the effective
distance becomes shorter or the unit does not function
even though the switch is pressed. In such a case, both of
the batteries should be replaced with new ones at the
same time.
* If the remote control is not used for a long time, the
batteries shall be removed from the case.
Effective distance:
approx. 5 meters
30° 30°

16
Block Diagram
LINE-1 PHONO LINE-2 LINE-3
PRE OUT
LECUA
MONITOR REC OUT
LINE
STRAIGHT
INPUT
SELECTOR LINE
STRAIGHT
Tone
Control
Tone
Control
straight
straight
MODE
EQ
RIAA
MONITOR Buffer
PRE OUTBuffer
SEPARATE
MAIN IN
B-Speakers A-Speakers
Phones
Speaker selector
SUBSONIC
MUTE
Pre amp
REG
.REG
.
For Main Amp For 6L6GC
Bias
For EQ., TC. Pre amp For ACC/ μ-computer For ECC82 Heater
FUSE
Power
Transformer
Volume/Treble/Bass/Balance
Remote
Input/Speakers/Frequency-bass/Frequency-treble
Selector
Cartridge/Monitor/Mode/
Line-Straight/Subsonic/Loudness/Separate
LED
μ-com
1dB
×88 step
1dB
×88 step
LECUA
MUTE
Pre amp
MM/MC
OPERATION
SP-B
SP-A
HP
LINE-4
FREQUENCY
BASS TREBLE
RECTIFIER RECTIFIER RECTIFIER RECTIFIER RECTIFIER RECTIFIER
REG
.
B1
B2
B3
C1
B4
(1/2)ECC82
(1/2)ECC82
GND GND GND B3B4 C1 B2 B1
GND
GND
6L6GC
6L6GC
(2/2)ECC82
GND
6L6GC Heater

VACUUM TUBE INTEGRATED AMPLIFIER LX-380
17
Specifications
Rated output 20 W + 20W (6Ω)
Total harmonic distortion 1 % or less (1 kHz, 20 W/6 Ω, at stereo, with LINE STRAIGHT “ON”)
Pre-amplifier
Input sensitivity/input impedance
(PRE OUT: 1 V)
PHONO (MM) : 3.0 mV/47 kΩ
PHONO (MC) : 0.38 mV/100 Ω
LINE : 180 mV/47 kΩ
MONITOR : 180 mV/47 kΩ
Main-amplifier
Input sensitivity/input impedance
MAIN IN : 690 mV/100 kΩ
Output voltage REC OUT : 180 mV
PRE OUT : 1 V
S/N ratio PHONO (MM) : 84 dB or more (PRE OUT, IHF-A correction, 3.0 mV input)
PHONO (MC) : 67 dB or more (PRE OUT, IHF-A correction, 0.38 mV input)
LINE : 95 dB or more
(IHF-A correction, input shorted, LINE STRAIGHT “ON”)
Frequency response PHONO (MM) : 20 Hz - 20,000 Hz
(within ±0.5 dB, LINE STRAIGHT “ON”)
PHONO (MC) : 20 Hz - 20,000 Hz
(within ±0.5 dB, LINE STRAIGHT “ON”)
LINE : 20 Hz - 80,000 Hz
(within –3 dB, LINE STRAIGHT “ON”)
Tone control BASS (150 Hz) : ±8.0 dB at 20 Hz
BASS (300 Hz) : ±8.0 dB at 40 Hz
BASS (600 Hz) : ±8.0 dB at 100 Hz
TREBLE (1.5 kHz) : ±8.0 dB at 10 kHz
TREBLE (3 kHz) : ±8.0 dB at 20 kHz
TREBLE (6 kHz) : ±8.0 dB at 40 kHz
Supplied functions [Front panel]
• Operation switch
• Input selector
• Monitor switch
• Tone control
• Separate switch
• Subsonic switch
• Speaker selector (OFF/A/B/A+B)
[Rear panel]
• Input/output terminals
• Signal ground terminal
[Remote control function]
• Volume (up/down)
• Volume control
• Balance control
• Turnover frequency selector switch
• Cartridge selection switch (MM/MC)
• Line straight switch
• Mode switch • Loudness switch
• Headphone jack
• Speaker terminals
• AC inlet
• Mute
Circuit Driver: Mullard circuit, Output: Beam tetrode connection
Vacuum tube used 4x 6L6GC / 3x ECC82
Accessories • Remote control RA-25
• Owner’s Manual (This document)
• Safety cautions
• Power cable
• 2 pieces of “AAA” batteries
Power source 230 V 〜(50 Hz)
Power consumption 127 W
Max. external dimensions 440 (W) x 197 (H) x 403 (D) mm
(front side knob with 25 mm and rear side terminal with 28 mm included in
depth)
Weight 17.6 kg (main unit)
* Specifications and appearance are subject to change without notice.

18
Before Asking for Repair Service
While the unit is used, an unusual phenomenon may be confused as a malfunction for a certain reason. Prior to asking our official sole
distributor of your country for repair services, please check the table below and read the operating instructions for the subsidiary devic-
es. If the cause of the malfunction cannot be identified, please contact your dealer. When we have once accepted your request for
repair services, inspection fees and traveling expenses may be claimed even though the unit is found to be normal.
Problem Cause/Solution Ref. page
No power is supplied even
though the power switch is
pressed ON.
• The power plug is disconnected from the
wall outlet, or it is not completely inserted.
• Insert the power plug in the wall outlet
completely.
• The power jack is disconnected from the
AC inlet, or it is not inserted completely.
• Securely insert the power jack in the AC
inlet completely.
No sound is generated even
though the power is on.(for both
left and right channels)
• A shortpin plug is inserted to REC OUT or
PRE OUT.
• Remove the shortpin plug.
• The volume is muted. • Cancel the MUTE mode.
• The input selector or monitor switch is not
set to the source position to be played
back.
• Set the input selector or monitor switch to
the source to be played back.
• Cable connections are incomplete. • Make cable connections securely.
• The output level of the input device is set
to the minimum position.
• Adjust the output level.
No sound comes out from one
side.
• The connecting cable is not connected on
one side only.
• Make cable connections securely.
Humming sound (boon or zzz
noise) is generated.
• The ground side of the pin-plug cable has
no contact with the terminal.
• Make connections securely so that the
ground side of the pin-plug cable makes
contact with the terminal.
• The ground wire of the alalog player is not
connected.
• Connect the ground wire of the analog
player to the SIGNAL GND terminal.
• Connections or mounting conditions are
incomplete between the cartridge and
shell, or between the shell and tone arm of
the analog player.
• Connect (or mount) the cartridge, shell,
and tone arm securely.
• The connecting cables are too close to the
power cable.
• Keep the connecting cables away from the
power cable.
• Induction noise is picked up from a power
transformer of another device.
• Install it distant from other devices.
No effect of tone control or
balance control is observed.
• The line straight switch is set to ON. • When tone control or balance control is
used, the line straight switch shall be set
to OFF.
The subsonic, monaural or
loudness is not activated.
• The line straight switch is set to ON. • When the subsonic, monaural or loudness
is used, the line straight switch shall be set
to OFF.