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Two LEAK Stereo 20 Amplifiers

Here are two LEAK Stereo 20 amplifiers. The top one has been rebuilt to standard factory performance and looks while the bottom one has been extensively modified to improve the overall performance especially the distortion levels and the low end frequency response and timing. The measured performance figures are as follows.

 

 

Standard Factory Rebuild -
Power output net at onset of clipping = 10 Watts
Distortion figures THD at 1 Watt 1kHz = .08%
Distortion figures THD at 3 Watt 1kHz = .4%
Distortion figures THD at 7 Watt 1kHz = .8%
Low end frequency response cuts off at about 50Hz

LEAK Stereo 20 Amplifier

Modified too ST20 Plus -
Power output net at onset of clipping = 11 Watts (Gross 13 Watts)
Distortion figures THD at 1 Watt 1kHz = .035%
Distortion figures THD at 3 Watt 1kHz = .055%
Distortion figures THD at 7 Watt 1kHz = .1%
Low end frequency response cuts below 30Hz
The mid and top response are unchanged to retain the inherent sweetness.

LEAK Stereo 20 Amplifier
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