NITSCH DSHA-3FN User manual
DSHA-3FN
1
Introduction
Congratulations on your purchase of a DSHA-3FN, a collaboration
between NITSCH and Doug Savitsky of ecp Audio.
The DSHA-3F is regarded by the community as one of the best solid
state headphone amplifiers, but they are now very difficult to find.
We wanted to continue the life of this amp so that more people could
enjoy owning one.
Thank you, Doug Savitsky for this wonderful design. And thank YOU
for purchasing one!
Cheers,
Christian Tanimoto III (a.k.a. )
D S H A
Differential Stereo Headphone Amplifier
3 F N
Version 3
Designed with
Focals in mind NITSCH version
2 3
Connections
Operation
1. Connect your balanced
headphones to the XLR
headphone jack.
Note: DO NOT use balanced to
single-ended adapters on the
headphone output.
2. Turn the knob to control
volume.
3. Ensure the vents on top
and bottom of the amp are
unobstructed.
4.Enjoy your music.
1
3
23
Operation
R
SE
BAL
SE INPUT BAL INPUT
INPUT SELECT
R L
NITSCH × ecp Audio DSHA-3FN. Designed in California and Connecticut. Manufactured in Taiwan. No user-serviceable parts inside. nitschsound.com
L
1 5 42
1. Connect your single-ended
source to the SE INPUT jacks
with high-quality RCA cables.
2. Connect your balanced source
to the BAL INPUT jacks with
high-quality XLR cables.
3. Set the input switch for the
input you want to listen to.
Select up for balanced or down
for single-ended.
4.Connect the supplied power
cord. Ensure the amplifier
voltage matches your outlet.
5. Turn on the power switch. Up
is on. Down is off.
3
4
Balanced output only
DO NOT use balanced to single-
ended adapters on the headphone
output. Amplifier needs to run
balanced out to headphones or
you will damage the amplifier.
Headphone cable XLR
termination must be compliant
with professional audio wiring
standards for balanced and stereo.
Safety
• DO NOT place on top of hot
surfaces or equipment. Never
operate the amplifier with
the case lid off or not firmly
screwed into place.
• DO NOT disassemble the
amplifier or open the case.
There are no user serviceable
parts inside.
• Always ensure that the amplifier
is plugged into a grounded outlet
with a properly grounded power
cord.
• DO NOT allow foreign objects
or any liquid to fall into the
cooling slots. If a foreign object
or liquid falls into the amplifier,
immediately switch off the
power and disconnect from
the wall outlet. DO NOT touch
the unit until it is completely
disconnected.
Power
• Amplifiers are either 115VAC or
220VAC, but NOT BOTH. Your
amplifier is set by NITSCH and
requires the proper fuse for your
power setting. 110/120VAC use
160mA 250VAC 5x20mm Slow
Blow fuses. 220/240VAC use
80mA 250VAC 5x20mm Slow
Blow fuses.
• Connecting to an improper
outlet at the wrong voltage may
severely damage or destroy the
amplifier.
Warranty
2 years from the date of purchase.
For repair or replacement needed
due to manufacturing defects.
Caution
!Frequency response < ±1 dB 5 Hz to 35 KHz
THD 1 KHz 32 ohms < 0.02%
300 ohms < 0.015%
IMD CCIF 32 ohms < 0.0004%
300 ohms < 0.0003%
Dynamic range > 120 dB
Residual noise 20 Hz to 20 KHz < -100 dBu / < 7.75 uV
Crosstalk 1 KHz < -80 dB
Gain 1.5x, ~4 dB
Gain linearity 0 to -110 dBu < ±0.2 dB
Estimated bandwidth < 1 Hz to > 160 KHz
Output impedance 4.9 ohms
Topology Unique fully differential, deep Class A
Size 230 mm W × 242 mm D (case + switch
+ volume knob) × 60 mm H (with feet)
Weight 5 lbs. 2 oz. (without cable)
Specifications
NITSCH makes personal audio products for
people who value great sound. Visit us at
nitschsound.com
