Yamaha M4 Natural Sound Power amp 1978

Yamaha Natural Sound M4 Power Amp

Highly sought after/ vintage Analog 

HIGH END YAMAHA NS SERIES, 1978-1982
Works beautifully.
Sounds incredible.

Super well cared for. (Nice!)
 
If you're  interested in a second one,  pls contact me. Some people run a pair, left and one for right.

***This M4 is very very clean,
Almost like-new looking.
--->works great. (rarely used/ fresh out of climate control storage)

You can run the M4 straight from your computer and it's very clean.(bypasses any preamp distortion)
Great for a music recording setup.

Yamaha M4 really does sound accurate, just like how the ns10's are accurate.

Item will be carefully packed, properly protected. Shipped fast.
Any questions, pls  contact me

Thanks!


Specs:

120 WPC RMS / 8 Ohm * 170 WPC RMS /4 Ohm
THD: 0.005% /8 Ohm
10 Hz - 100kHz
SNR = 118dB
40 LBS
110/120/220/240V

RUNS IN CLASS A UP TO 5 WATTS OUTPUT
ONE OF FEW CLASSIC AMPS THAT GET FIRST WATT RIGHT
BEAUTIFUL RICH AND DETAILED SOUND EVEN AT LOW VOLUME

MSRP IN 1980 = $750 USD
99% IN SOUND QUALITY COMPARED TO B-2

* Can be run straight from CD player or PC, to eliminate preamp distortion
* Variable output L/R
* DC/AC mode
* Speakers A,B
* 17 x 15 x 5 1/2 "
* Made in Japan
* SUPERB BUILD QUALITY AND AWESOME CLEAN POWER

"The voltage amplifying stage employs a cascode-connected differential two-stage circuit throughout.
The use of a Dual FET input and a new cascode bootstrap circuit in the first stage and a cascode-connection, current-mirror and push-pull output in the pre-driver stage ensures a high degree of stability, low distortion and improved high-frequency characteristics.

In the driver and the power amplifier, a three-stage emitter follower is paralleled with pure complementary OCL SEPP circuitry using high-fT transistors. This accounts for wide bandwidth, high output and low distortion.

Two extremely large 15,000µF capacitors, two separate constant-voltage power supplies for the voltage amplifying stage, and the use of a pure copper plate earth line for ultra-low impedance guarantee greatly reduced intermodulation distortion, improved separation and absolutely stable operation.

Except for the chemical capacitors in the power supply section, mylar and styrol capacitors are employed throughout ; layout of parts, wiring, earth line as well as many other aspects have been given due consideration." .

Thanks for looking!

Keywords, Analog, McIntosh, akai, turntable, recording studio, mixing board, mixer, Neve, jbl, speakers, marrantz, marantz, altec, receiver,stereo, tube