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Natrag 27.5.2010.
MY FIRST (and likely last) ELECTRONICS DIY PROJECT (Canceller, with a little help from Master M)
The Rossellini UARSS preamplifier fired up for the very first time. It is hooked up to the Dufresne 300B amplifier and Tannoy HPD385 speakers. The auditioning material in the clip is Keith Jarrett's "The Köln Concert" CD (ECM). All went exceedingly well, no fire extinguishers were needed. Not bad for a girl, even if I say so myself. :) (recorded with iPhone, indoor, night time, raw recording-no enhancements)
Our Siemox amplifier with Siemens F2a tubes and Rossellini UARSS preamplifier in action. The auditioning material in the clip is again Keith Jarrett's "The Köln Concert". The speakers are our usual Tannoy HPD385's. So far so good. I hope the preamp will be a keeper. Or I'll have to make it a keeper. 3:-) (recorded with iPhone, as above)
Rossellini Ultimate Anniversary Reference Signature Statement Preamplifier
Rossellini UARSS preamplifier in the making
Rossellini UARSS separate power supply
I started off with the Ken-Rad 1633 but soon decided to switch to Ken-Rad VT-231 JAN-CKR-6SN7GT. After all, this is supposed to be a friggin' ultimate badass thingy, right? ;) Anyway, the preamp does sound A-W-E-S-O-M-E with the VT-231. There is absolutely nothing about it not to like - definition, soundstage, bass, mids, highs...you name it.
Rossellini UARSS preamplifier innards, loosely based on the Blue Velvet preamplifier design by Dick Olsher and Kara Chaffee
Rossellini UARSS power supply innards, entirely designed by Master M
Rossellini UARSS in action
Singing in the dark
Measurements
Gain: 6db Frequency response: 10 Hz - 200 kHz Input impedance: 50 kOhm Output impedance: 900 Ohm
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