Technics SU-V7 stereo integrated amplifier
Early 80s model with vertical selector knobs, white lettering, moving coil & moving magnet phono stages
Rated at 80W RMS New class A amplifier circuit
New Class A :
refers to the amplifier
type -
Class A
amplifiers have their
transistors always turned on during each half cycle of the music waveform. It means they are power hungry and
require a big heavy power transformer and large smoothing capacitors. The upside is no crossover distortion
and a high quality sound
Class AB
amplifiers are the
standard - they switch off one half of the transistors when not needed and then turn them on again as the
music waveform requires. This is efficient, so that you get a lot of power for low cost, but the downside is
more distortion as the transistors turn on / off and on again
New Class A
is the Technics amplifier
circuit design where transistors are left on a small amount always - still cheap to make but with much less
crossover distortion and a lot of power for less weight and expense
This is why you see
New Class A
amps still going strong
after 25 or 30 years - owners get a good quality sound and ample power - and so you don't have to turn the
volume up too much to attain average listening levels. They punch above their weight and last and
last.
The MC moving coil phono circuit has been restored, fully tested using vintage FETs which are to be sourced from
overseas. It will function perfectly on cd player input or the matching ST-S6 tuner also on offer
Features :
-:®:- 1981, 1982 model dark grey colour
-:®:- Power rating : 80W RMS at 8 ohms
-:®:- Frequency response : 20Hz - 20kHz at rated power
-:®:- Total Harmonic distortion THD : < 0.003%
-:®:- Phono signal / noise [A-weighted, at 5mV] : 77dB
sensitivity 0.25mV
-:®:- Maximum phono input : 150mV
-:®:- High level sensitivity : 0.15V
-:®:- Dimensions [ W x H x D ]: 430 x 125 x 374mm
Weight : 13.2kg
SOLD
Aug 2008 on
trademe
to Kerikeri
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