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TUBE POWERSMPLIFIER
M3 - BLACK SHARK

Monoblock - Class A - NoNFB



Cathodecoupled (Circlotron)

Tubes
6L6GB/GC 6
E88CC/6922 4
OB2 1
Pout at 3kHz and 3% THD
70W
THD by 1kHz
50W 0,6%
5W 0,1%
,5W 0,04%
,05W 0,04%
Frequence response at -3dB and 1W
,6 - 140.000 Hz
Powerbandwidth at -3dB
7 - 130.000 Hz
S/N
-91 +8dB
Slewrate
19V/us
Output Impedance
1,5 ohm
Sensisivity
unbalanced 1V/19 kohm
PSU capacity
STANDARD-7 100J
LUX-7 140J
Dimensions (w/o packing mtrl)
BxHxD 217x180x458mm
Weight (each)
17kg
Power consumption
210W
Mains voltage
AC 230V/50Hz
Input connections
RCA-jacks
XLR-jacks (Cannon)

In Autumn 1995 I met Anatolij Devichinsky, managing director and chief designer on Past Audio at his office north of the Finlandskij railwaystation in St Petersburg, Russian. My intention was to get a look at the company's tube amplifiers that recently had been adverticed in local audio journals and hopefulle get a chance to listen to them.
I got a possibility to listen and three months later I had bought a pair of the amplifiers. At that time Past Audio was the main producer of High End in Russia - approx 25 pairs of amplifiers were sold each month. Most of them went to a prosperous market in Moscow but some went abroad tp Framce, Engalnd, Austria, Norway and even HongKong.
Past Audio also produced a preamplifier with a MM/MC-input and a passive "preamp" (commutator) along with a mains filter and a loudspeaker commutator.
Successively the company enhanced their models and released versions of the amplifier with 6 and 8 tubes, with balanced input and started to use EL34 in a model capable of utputting 120W, and a trioded version giving 50W with an outpot impedance close to zero.

The nickname "Black Shark" came from the colour and the appearance - long and slender, like the Russian attack helicopter used in Afganistan.

This pair I have are for sale by the way. For a modest $2000 or SEK15000 they can be yours.