The TPA-1 is first and foremost an incredible two-channel audio preamplifier that uniquely combines hand-selected thermionic
(tube) technology while at the same time offering both IR and ADA Bus® remote control of input selection,
volume, mute, on/off, tone and loudness on/off as well as the iPod. The TPA-1’s remote control stage is
completely relay driven, preserving the analog signal path for sound even a purist will relish.
At the heart of the TPA-1 lie three different tube stages. In addition to the preamplifier tube stage, the
tone controls also pass through their own tube stage. The TPA-1 features a
record output making it possible to share the fabulous iPod sound through a multi-room system.
The TPA-1 has three additional inputs, and for those who still enjoy vinyl, ADA offers the PP-1200 Phono
Preamplifier (for moving magnet cartridges). The TPA-1 can also be ordered without the iPod docking
base. Here, the record output can now be used as a input for a fourth source component.
The TPA-1 is encased in a nickel-plated aluminum chassis.
Gain: 26dB (Preamplifier)
Volume Range: 60dB
THD @ 1KHz: < 0.05% @ 2V
Dynamic Range: 90-100dB
Input Impedance: 47K Ohm
Output Impedance: 2K Ohm
Bass Tone Control: +/- 15dB @ 50Hz
Midrange Tone Control: +/- 10dB @ 1KHz
Treble Tone Control: +/- 15dB @ 15KHz
Tone Bypass: Relay Switched
Input Selection: Relay Switched
Output Mute: Relay Switched
Volume Control: Relay Switched
Vacuum Tubes: 6922 Hand Selected
iPod Line Amplifier: 6dB Dedicated Tube Preamplifier
Power Supply: 120VAC/60Hz (220VAC/50Hz Optional)
Dimensions w/iPod: Rack Mount - 19”W x 8”H x 16”D
Non-Rack-Mount - 18”W x 8”H x 16”D
Dimensions w/o iPod: Rack Mount - 19”W x 3.5”H x 16”D
Non-Rack-Mount - 18”W x 3.5”H x 16”D