Custom built tube amplifier by Electra-Print Audio Co. - $3,800 - (Las Vegas, NV)
This amplifier, the P134B, will be the first of many for sale. This is the latest, prototype of the SE EL34, iso-linear amplifier developed by Jack Elliano of Electra-Print Audio Co. This circuit is the result of four years of research into lowering of intermodulation distortion, (IMD) so prevalent in, little or no NFB, SE tube circuits. The EL34 was selected from tubes including, power triodes, beam tubes, KT, and transmitting types, used in power SE circuits with no NFB, as best performance in low IMD, usable power, SE operation. The output transformer is unique also, as the circuit on our site shows. The secondary/s are Partial Silver wire. Specs are, power output, 11 watts to slight clipping from 1.5v input output impedance matching range, 6 to 20 ohms Bandwidth, -1db 25hz to 26khz THD @ 2 watts .25% IMD 1.5% @ 3 watts, 10% @ 7 watts. noise floor from zero reference -61db To see circuit operation and circuit, go to Electra-Print.com site under amps for sale.
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From ebay.com - 1 month ago