For sale is a Purity Audio Design Ultra GT pre-amp. This is one of the original statement pieces created by Bill Baker @ Response Audio (now Raven Audio) with the upgraded Dueland copper foil capacitors with built in Silver bypass. The Silver Statement version debuted at the Rocky Mountain Audio Fest in 2010 and the "Ultra GT" was born shortly thereafter with a "no holds barred" approach.
I reviewed this pre-amp on AudioCircle
here when I purchased it new in 2011. It would be almost impossible to rebuild this pre-amp at the price listed given the cost and quality of components included. Purchase includes all items that came with and more!
This is certainly one of the finest preamplifiers to grace my system. I am selling while I rebuild my house/listening room requiring me to crate everything up and store for quite some time. As such, I'm looking to pass this beauty on to someone who will appreciate the world class piece this it is.
This system is a 2-chassis pre-amplifier with separate power supply. Each acrylic piece comes carefully wrapped and double boxed (cardboard and OSB) as can be seen. The output capacitors are the famed Duelund hand wound coupling capacitors with the upgraded internal silver bypass! I've included all my tubes, including my favorite - a matched pair of Amperex Bugle Boys. Each tube presents a different flavor of sound, and you can insert your desired pair to match your tastes.
Package includes:
- Twin OSB crate and cardboard box packaging for safe transport
- 5 matched pairs of 12AU7 tubes: Brimar, Psvane (grade A), Mullard Blackburn (ECC82), RCA Cleartop and the creme de la creme,
Amperex Bugle Boy- Allen wrench for acrylic top removal and access to tubes / gain adjustment knob
- Bent Audio remote
I will accept PayPal, cash or certified check. Purchaser responsible for shipping and PayPal fees.
AudioCircle price = $14,000. Details and pics below.
Full dual mono, two-chassis design:
- Zero feedback design
- Silver transformer coupled balanced input
- Silver transformer coupled balanced output
- Dual triode 12AU7 signal tubes
- Central one-point star earth grounding
- Copper lined power supply and analog chassis
- Separate transformer and power supply for remote system
- Attenuation network utilizes independent autoformer design with silver Bybee Purifiers
- Encoder rotation knob type
- 100% acrylic 4 chamber chassis
- Laser engraved front, rear and top panels made from solid acrylic
- Laser engraved remote control made from solid block of aluminum
- Silver input / output single ended RCA and XLR connectors
- Line Inputs - 6 sets - 3x Balanced / 3x single ended
- Line Outputs - 4 sets - 2x Balanced / 2X single ended
Analog components:
- Dueland coupling capacitors with internal silver bypass
- Silver balanced input transformers
- Silver balanced output transformers
- Silver tube sockets
- Silver Bybee Purifiers in input stage
- Silver Bybee Purifiers in output stage
- Silver solid core OCC/AirLok internal wiring
- Silver RCA connectors
- Silver XLR connectors
Power Supply components:
- Polypropylene storage capacitors (42 pieces total)
- Choke filtered (each power supply)
- High current "Ultra Fast - Soft Recovery" diodes
- Bybee Music Rails in each power supply
- Bybee Purifiers in power supplies - installed in both legs prior to rectification stages
- Separate, dedicated power supply for remote unit
- Copper lined
Original pics below (happy to take any and all new ones):
