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Audio innovations series 500 EL34 integrated amplifier

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Audio innovations series 500 EL34 integrated amplifier  Empty Audio innovations series 500 EL34 integrated amplifier

Post by timurmusicfan Mon Apr 03, 2023 12:10 pm

A classic from the 90's. 
Quartet of EL34 provide 25W of Push-pull Class A power
with SS rectification. 
Preamp tubes are ECC83 with ECC88 driver tubes. 
Current: EL34 = Ruby EL34BSTF (3 years old) 
Line preamp = Telefunken 12AX7 (well worn)
Phono preamp = original Precision ECC88 (not used since y2k). 
Driver: Audio innovations ECC88 (well worn). 
This model is with the sought after Henley transformer with 4,8 & 16 Ohm outputs. 
Bought new in 1991 (was RM4.2k then). 
Upgraded: coupling caps and Diode (done by Trikay years ago).
Note: 5881 tubes works well in this amplifier. Improves the bass significantly although it sacrifices a little bit of the EL34 sweetness. 
Condition:7/10 due to age. 
Performs and looks great. 
Used sparingly for many years now. 
Asking price: RM 4K. 
Please Google for reviews. Unlike some tube amplifiers, this amplifier can rock. The phono preamplifier in this integrated (a pair of good ECC83/12AX7) can beat many standalone preamplifiers. 
Buyer beware: the amplifier is 32 years old. It sounds good BUT the power supply caps need replacement. I took it to a Technician years ago to replace caps but he said that the caps are still okay, don't touch it. But that more than 10 years ago. 
Box and manual lost in the mist of time. 
Can test it @Cyberjaya. 
Wasap o169 two two 786 zero for photos. 
 Will be happy to exchange with Frank Ultrabank.

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