Announcing the newest AVA musical upgrade:
The 6N1P upgrade for all AVA hybrid and tube preamplifiers and DAC

With a lot of work, testing, and listening, we have been able to engineer a very useful upgrade to these products. The 6N1P tube has substantially higher current drive and linearity than our current 12AT7 tube in line applications. Redesigning our circuits to use this tube makes a really nice musical improvement in all the applicable products.

What you hear is significantly better dynamics, resolution, and range. Along with that comes an even sweeter, more open, and more musical extreme top end. We think this new upgrade will make you very happy.

The upgrade requires parts changes on the PC card to rebias the circuits for the 6N1P tubes. It also requires changing the heater supply to accommodate the higher current draw and 6 volt heater voltage.

Because the 6N1P tubes demand more heater current, are biased on harder, and have much more current drive, they run hotter. Thus part of the upgrade includes a new cover for the preamps and DAC with significantly greater ventilation.

But I just got my unit before you announced this! :(

Not to worry, we have been shipping all units with this significant upgrade since December, 2006. If you have received your unit within the past three months, simply look at the back label. If it says “use two 6N1P tubes” it is current. It may not have the full ventilated cover. We will give you a cover exchange free of charge, as long as you send the old one back. Call us at 651-330-9871 for details.

The upgrade cost for any Ultra preamplifier, Transcendence Eight preamplifier, or Ultra DAC built before December, 2006 in our big chassis is $299 including the new cover. Again, call us for details.

Thanks for reading all this.

Frank Van Alstine 3/22/07


Ultra SL Preamplifier

Ultra EC Preamplifier

Transcendence Eight Vacuum Tube Preamplifier

Ultra DAC