Up for sale is a newly serviced HK Citation 19, rated at 100 watts per channel (into 8Ω impedance stereo, can be bridged to mono at 220wpc). Cosmetic condition is good, unit fully functions as intended, inclduing pilot lamps and power meters. Note that the toggle switch in front is non-OEM, the original was a push switch. Recently acquired from original owner, who appears to have taken good care of it. However, as with any amp that is as old as this one (late 1970s), it needed some service to return it to spec. Here is a list of what I did:
- Replaced all transistors in the left channel's output stage (one was a dead short).
- Replaced filter capacitors with quality, TDK/EPCOS 10,000uf/100V. Modern caps are too small for these clamps, so I held them in place with some neoprene rubber with adhesive backing, which should absorb any vibration.
- Replaced both bridge rectifiers.
- Installed 2 new pilot lamps.
- Replaced all electrolytic caps on the driver board.
- Replaced the power cord (ground prong had been missing).
- Adjusted the idle current pot to 70mv, as recommended in the service manual.
- Tested DC offset. Less than 20mv in both channels, very healthy.
- Bench tested with dummy load and signal in. I got 110-115wpc out of it before I started seeing clipping (it is rated at 100).
Presumably, interested people will know a bit about this amp, but I will paste in the specs (courtesy of HiFi Engine) below. The build quality on this is second-to-none.
Offers are turned on. However, this is already cheaper than any listing I see out there at the moment (especially when shipping is factored in), so unserious offers that I find are disrespectful of my time and labor will be ignored. Thanks for your interest.
- Power output: 100 watts per channel into 8Ω (stereo), 220 watts into 16Ω (mono)
- Frequency response: 5Hz to 50kHz
- Total harmonic distortion: 0.08%
- Damping factor: 125
- Input sensitivity: 1.25V
- Signal to noise ratio: 100dB
This item is sold As-Described
This item is sold As-Described and cannot be returned unless it arrives in a condition different from how it was described or photographed. Items must be returned in original, as-shipped condition with all original packaging.Learn More.
| Listed | 2 days ago |
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| Condition | Very Good (Used) Very Good items may show a few slight marks or scratches but are fully functional and in overall great shape.Learn more |
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