Technics SU-V4X stereo integrated amplifier - dark grey / silver control knobs
Mid 80s model with large input select buttons and silver knobs to compliment the dark grey front colour
Rated at 65W 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 :
-:®:- 1984, 1985 model - dark grey / silver knobs colour
-:®:- Power rating : 65W RMS at 8 ohms
-:®:- Frequency response : 20Hz - 20kHz at rated power
-:®:- Total Harmonic distortion THD : < 0.004%
-:®:- Phono inputs : MM / MC moving magnet / moving coil - front switching
-:®:- Phono signal / noise [A-weighted, at 5mV] : 77dB sensitivity: 0.30mV
-:®:- Maximum phono input : 150mV
-:®:- High level sensitivity : 0.15V
-:®:- Tone : source direct or via tone controls switch
-:®:- Speakers out : A, B, A + B
-:®:- Muting : front switched muting
-:®:- Dimensions [W x H x D]: 430 x 98 x 292mm
-:®:- Weight : 7.3kg
SOLD December 2009 on trademe to Bay of Islands
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