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Tube Preamp Console
iAMP amplifier was designed to provide a significant value based on a high performance to price ratio that will exceed the sonic quality of good solid state amplifiers with its musical accuracy. 


  • Seperated Power Supplier

  • GZ34 rectifier tube power supply

  • Comprehensive manual supplied

  • Hand wired point to point

  • Class A Triode front end Output circuit

  • Wide Frequency Respnose / Low Distortion Tertiary custom output transformers  (10Hz to 65KHz)

  • Exclusive "Closing Coupled Circuit" for our tailor-made output transformers  

  • Individual potted transformers to reduce transformer noise

  • Japan ALPS Blue volume pot

  • M-Cap Hi Fi quality audio capacitors

  • DCT3 SIP Silver Ion Plated 6N OCC power cord 

  • DCT3 Pure Silver or SIP Silver Ion Plated PTFE audio cable

  • Double silver plated, double rhodium plated DCT INPUT & OUTPUT, GROUNDING terminals

  • DCT INPUT RCA x 2 and OUTPUT RCA terminals x 2 and XLR x 1 which are 4N OFHC with inner silver layer is 1.5 microns thickness and the outer rhodium layer is 0.5 microns thickness   

  • 1.2 Watts power output for Headphone

  • DCT IEC power input 

  • High technology soldering process with  LEAD-FREE 2% SILVER SOLDER  ensures consistency



Maximum Voltage Output

10V RMS Unbalanced   

20V RMS Balanced                  

Total Harmonic Distortion

0.005% maximun from 20Hz to 20KHz                      

Frequency Response                                 

+0, -3dB from 10Hz to 100KHz 

+0, -0.5dB from 20Hz to 20KHz                                  


450mV Unbalanced

900mV Balance

A-Weighted Signal To Noise Ratio High Level

107dB (Below rated output)

Input Impedance

High Level - 44K ohms Balanced

22K ohms Unbalanced

Maximum Input Signal

20V Balanced

10V Unbalanced

Voltage Gain

High Level, XLR, 1&2: 15dB

Output Impedance

300 ohms Balanced

600 ohms Unbalanced

Headphone Load Impedance (Selectable)

Headphone Voltage Gain

16-40 ohms, 0dB

40-150 ohms, 6dB

150-600 ohms, 12dB

Headphone Output

120mW minimum

from 16 to 600 ohms load

Power Requirements

100 Volts, 50/60Hz at 4.0 amps

110 Volts, 50/60Hz at 4.0 amps

120 Volts, 50/60Hz at 4.0 amps

220 Volts, 50/60Hz at 2.0 amps

230 Volts, 50/60Hz at 2.0 amps

240 Volts, 50/60Hz at 2.0 amps

Note: Refer to the rear panel of the TPA-1HP for the correct voltage.

Tube Compliment

1 – GZ34  Regulated Circuitry

2– 12AX7 Phone Stage

4 – 6SN7  High Level Circuitry

Overall Dimensions


Width is 5.0 inches (13.0cm)

Height is 7.5 inches (19.5cm) including feet

Depth is 13.0 inches (33.0cm) including Front Panel and Knobs


Width is 10.5 inches (26.5cm)

Height is 6.0 inches (15.5cm) including feet

Depth is 13.0 inches (33.0cm) including the Front Panel and Knobs


33 pounds (15.0kg) net

38 pounds (17.0kg) in shipping cart

** Due to continuous product improvement, actual product might be varied from product's picture.
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