Jimmy’s Junkyard » preamplifier

Wednesday, 8th February 2012.

IHEAC Tube Pre-Amp Blind Test Session

Posted on Sunday, 30th January 2011 by Auw Jimmy

Indonesia High End Audio Club or in short, IHEAC, held an blind test (or maybe I would prefer to call them as blind scoring) for tube pre-amp. The session was started on the afternoon, around 11am. Some equipment used shown below.

We can see some stuff like Quadral Platinum M4 speaker, Consonance Droplet CD Player, Air Tight Reference Pre-Amp ATC-3, and KT88 tube amplifier (I believe in Push Pull configuration).

(more…)

Tags: Blind Test, iheac, pre amp, Pre Amplifier, preamplifier
Posted in DIY Audio, Indonesia | Comments (3)

Pre-Amp #26 Parafeed – Tweaked with Jensen Copper Foil Paper Tube

Posted on Sunday, 22nd November 2009 by Auw Jimmy

I visited my friend’s home few days ago. We planned to tweak his #26 Pre-Amp (with Parafeed design).

His Pre-Amp was a high quality pre-amp, in terms of parts and design. As you can see below, the high voltage section has Black Gate SKZ capacitor.

He just finished tweaking the high voltage section by adding 3 huge Russian Teflon capacitors (FT-3) and got significant improvement on the sound staging. He was poisoned by the VCap Power Supply trick as I did on my pre-amp, so he tried the cheap Teflon solution first, the Russian FT-3 before going down deeper with VCap

26-jensen

At first, his #26 used Jensen Capacitor Aluminum Foil. The overall sound is live, fast rhythm, and dynamic. A little bit less sexy on the vocal side for my taste and the top end detail was a little bit “flat”. Then we changed to Jensen Copper Foil Paper Tube. How did it sound? Keep reading.

(more…)

Tags: 26, jensen, preamp, preamplifier
Posted in DIY Audio | Comments (18)