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Harman Kardon AP2500

Stereo Preamplifier (1996-97)

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Harman Kardon AP2500

Specifications

Frequency response: 0.2Hz to 380kHz

Total harmonic distortion: 0.01%

Input sensitivity: 0.125mV (MC), 2.2mV (MM), 135mV (line)

Signal to noise ratio: 78dB (MC), 81dB (MM), 105dB (line)

Channel separation: 60dB (MM), 55dB (MC), 50dB (line)

Output: 1V (Pre out)

Dimensions: 443 x 105 x 347mm

Weight: 5.8kg

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Reviewed Jul 14th, 2017 by Bronco2011

This pre amplifier is one of the last series when HK really made high end audio gear. This pre amp doesn't have any opamps. It is totally build with discrete components. The philosophy was that opamps don't have a natural sound. By using only discrete circuits the result is wide bandwidth and low negative feedback, essential for the smooth clear, natural sound. I compared the AP2500 with the Adcom GFP-555 and NAD114 pre amp. In comparison the HK really does sound more natural and coherent. The Adcom sounds analytical and not smooth. While NAD114 sounds warm and woolly. In my opinion the AP2500 is a secret gem. It is a class A build pre amplifier with a great natural sound, wide and detailed stereo image. It pairs very good with my Bryson 3B power amplifier.

 

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