Technics SU-V7 stereo integrated amplifier - 2nd unit - silver
Early 80s model with vertical selector knobs, front panel selectable 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
Features :
-:®:- 1981, 1982 model silver 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 December 2009 on trademe to Auckland
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