Harman Kardon HK-775

Pr of excellent sounding Harman Kardon HK-775 Mono Power amplifiers. They were built when Harman Kardon was at the top of their game. They are:
Harman Kardon hk775 Ultrawideband Monophonic DC Amplifier.
From the web: The 775 is a monoblock capable of outputting 130 watts into 8Ω and 260 watts into 4Ω. It was designed and built as part of h/k's Ultrawide Bandwidth DC series of components, which, as the title implies, were capable of a frequency response of DC-300,000Hz. The amplifier is very high speed with a slew-rate of 130V/ms.
They have LED power meters with sensitivity adjustments, ultrasonic and subsonic filters, discrete power transistor outputs, huge power supplies, transformers and heatsinks. They sound excellent, detailed, dynamic, extended, spacious, involving, transparent, smooth, natural and very musical. They are conservatively rated and are very powerful amplifiers. Dual mono amplifiers always sound better than stereo amplifiers due to elimination of crosstalk, better imaging, doubled power supply, independant circuitry, can place amplifiers close to speakers to avoid long speaker cables. They are in nice cosmetic condition. There are a few very small nicks and scuffs, mostly on top, nothing serious at all. Better get these rare and very nice sounding HK-775 mono power amplfiiers. They are heavy and well built.