Astin Trew AT-5000 clone - diyAudio
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Old 17th December 2012, 11:14 AM   #1
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Join Date: Oct 2012
Default Astin Trew AT-5000 clone

Hello

I really like the Astin Trew AT-5000 on my Klipsch, but i'm courious if there is maybe a similar diy concept here in this forum. The circuit uses J162/K1058 comlementary MOSFET's in push pull. The design is single-ended, using a valve, Schottky diodes and multiple power capacitors with 44 joule capacity per channel, and a dual mono construction, including 2 x 300VA transformers.

Astin Trew | AT5000 power amplifier

In a hifi test a reviewer said the AT-5000 power amplifier produces a modest 45W into 8ohms, rising to 72W into 4ohms, less than expect considering size and weight. Distortion levels and spectra looked good in the midband but deteriorat significantly at high frequencies. The AT-5000 had a problem here, as it would not swing full output at 10kHz on either channel.It managed around 9V maximum (10W) into 8ohms before severe waveform distortion (greater than 3%) set in. At 1W output the amplifierís output distorted badly above about 25kHz too, a performance easily bettered these days.

I'm a total greenhorn in building electronic stuff, just to let you know.

Thanks a lot

Last edited by woodchamber; 17th December 2012 at 03:00 PM.
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