So here it is after much await, the grand Daddy of all amplifiers as Docteur said once, McIntosh MC431M Power Amplifier. 

McIntosh MC431M Power Amplifier by Yawar Masood, on Flickr
The amplifier needs no introduction. So I will cut the crap short 
Features/ Specifications:
- 4 channel X 100w. Configurable for 4/3/2 channel operation.
- Total Harmonic Distortion (THD) - 0.005%
- Signal to Noise Ratio (SNR) - 110dB
- Includes built-in electronic crossover with separate high pass and low pass filters.
- Power Guard. Multi-stage thermal protection.
- Dual illuminated output level meters- Ported tunnel forced-air cooling.
- Dual MOSFET PWM power supplies.
- Input level controls. Transient protection.
- Gold plated terminals.
- 2 ohm stability. - Sold from 1994. Last retail price $1500.00
Special thanks to 2 lovelies for helping me getting my hands on this monster. @blacklist1 and @Bilalicious
:*
Many thanks to @SoundMaster as well 
Pictures:

MC431M Power Amplifier by Yawar Masood, on Flickr

McIntosh by Yawar Masood, on Flickr

McIntosh MC431M Power Amplifier by Yawar Masood, on Flickr

Other side by Yawar Masood, on Flickr

Power Input by Yawar Masood, on Flickr

Speaker Connections by Yawar Masood, on Flickr

RCA Out by Yawar Masood, on Flickr

Amplifier details and Serial Number by Yawar Masood, on Flickr
Mint hai ya nai?

