06. Component connections
Before initial power-up, install the interconnects to the preamplifier and the
cables to your loudspeakers. If possible, connect the included ground wire
between the grounding posts of your preamp and amplifier.
Interconnects Use any high-quality RCA or XLR-terminated cable. Insure
good non-oxidized contacts. Naturally, we recommend our own NF/XLR
cable EINSTEIN The Flash which has been designed for optimum synergy.
Because The Poweramp operates fully differential from input to output, XLR
connections from the preamp are the preferred means for optimal results,
especially when that preamp happens to be our fully differential, fully bal-
anced (and fully complementary) The Preamp valved linestage!
Loudspeaker cables Insist on cables with superior non-oxidized contacts
and sufficient conductor mass to supply adequate current to the speakers.
This insures proper damping factor for mandatory transducer control. (Ca-
bles of insufficient conductor mass can strangulate an amplifier’s current
delivery.) Our EINSTEIN The Thunder loudspeaker cable matches all require-
ments in a perfect way.
07. Power mains
To turn the machine on or off, please use the switch at the bottom of the
amplifier (left side behind the front panel). Three blue LEDs inside the central
display will confirm power as will the glow of the valves. Thermal stabilization
and final readiness are indicated after about 2-3 minutes once the two
outer LEDs have extinguished. Should one or both of these outer indicators
remain lit, contact your dealer or the factory to avoid internal damage. Op-
timal operation conditions and stabilized sonics for The Poweramp are
reached within a half hour of turn-on.
If there is a problem with the amplifier, either both or one or the other LED
will remain lit, at which point you should turn the amplifier off and contact
your dealer / distributor or EINSTEIN directly. The unit will achieve its optimal
sound and operating temperature after approximately half an hour. It is
recommended that you don’t tax the amplifiers unnecessarily during this
warm up phase as it may result in lower tube life.
08. Control units on the back panel
a. On the back panel of the amplifier you find the loudspeaker terminals for
the right and left channel (red = + output, white = - output)
b. Also on the back panel are the input jacks for the right (red) and left
(white) channel. Although The Poweramp is optimized for balanced opera-
tion (XLR balanced input-jacks) you also can combine unbalanced pre-
amps without any technical problems.
For balanced connection please use the 3-pin XLR jacks. (1=Ground,
2=+Input, 3=-Input)
For unbalanced connection you have two RCA-jacks each per channel.
You use only one jack for each channel (for not inverted normal operation
use the red RCA jack - the white RCA jack delivers an inverted signal).
Please assemble the provided RCA termination connectors (jumpers) to the
RCA jacks not needed.
