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Van Alstine Ultra DAC Review - - Dagogo
https://www.dagogo.com/van-alstine-ultra-dac-review/
Had I been more familiar with Audio by Van Alstine products, I would have known that was unlikely as they are built to endure. The creator of the Ultra Dac, Frank …
Van Alstine Ultra DAC DACs user reviews : 5 out of 5 - 2 ...
http://www.audioreview.com/product/digital-sources/dacs/van-alstine/ultra-dac.html
Reviews of 3 Van Alstine DAC's After doing in home Auditions of all 3 Van Alstine DAC's I thought I would post a review on each one. VA offers a Solid State DAC called the Insight for about $900, an all Tube DAC called the T8 for about $1400 and a hybrid tube/ss DAC called the Ultra for about $1700. Let me say this first.
Audio by Van Alstine work [Mithat Konar (the wiki)]
https://mithatkonar.com/wiki/doku.php/audio/audio_by_van_alstine_work
Audio by Van Alstine work. I have done quite a bit of consulting work for Audio by Van Alstine over the years. I'm summarizing below some of it. While I completed a number of smaller projects for AVA before 2002, I decided to pick up the story with the Transcendence Five as that is the first product that was my complete circuit design.
Van Alstine Insight DAC DACs user reviews : 5 out of 5 - 2 ...
http://www.audioreview.com/product/digital-sources/dacs/van-alstine/insight-dac.html
Audio Enthusiast. Frank Van Alstine recently identified an OP-amp replacement called the Insight+ upgrade to the Insight and Ultra DACs, which drops the noise floor, removes residual solid state "dryness" and results in improved sound stage, transparency and detail. All Insight DACs are shipping with the new OP-amps.
AVA Ultravalve Vacuum Tube Amplifier by Van Alstine
https://forum.audiogon.com/discussions/ava-ultravalve-vacuum-tube-amplifier-by-van-alstine
1. Make sure you get what you’re looking for in terms of tube rolling, can the AVA run any other output tube besides EL34s? In my case it was important to me to be able to run the different output tubes (KT88s and KT120s, not just EL34). I honestly don’t know if the AVA allows for this (might, just not sure).
Ultravalve Vacuum Tube Amplifier - High End Audio, Stereo ...
https://www.audioshark.org/amplifiers-8/ultravalve-vacuum-tube-amplifier-11665.html
Anyone hear this amp? The Ultravalve uses two 6GH8A small signal tubes and four power output tubes. We supply matched quad sets of EH 6CA7 output tubes, but EL34 or KT77 tubes can be used too. Power is 35 watts per channel, but you can use it where you would normally use a 100 watt solid state amplifier.
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