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Pure Tube Mono Block Power Amplifier
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. 


  • Comprehensive manual supplied

  • Hand wired point to point

  • Class A Triode front end Output circuit

  • ULTRA LINEAR or TRIODE switchable amplification mode

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

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

  • Built-in adjustable Bias & tube test meter

  • 3 potted transformers to reduce transformer noise

  • 23 steps resistor volume pot with DCT3 treatment 

  • M-Cap and BHC Hi Fi quality audio capacitors

  • DCT3 Silver Ion Plated 6N OCC power cord 

  • DCT3 Pure Silver or Silver Ion Plated PTFE audio cable

  • Double silver plated, double rhodium plated DCT Input & speaker terminals

  • DCT input RCA terminals and output speaker cable terminals which are 4N OFHC with inner silver layer is 1.5 microns thickness and the outer rhodium layer is 0.5 microns thickness   

  • DCT IEC power input 

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



Power Output

Minimum sine wave continuous average power output per channel, both channels operating is:

TRIODE mode:                60 watts

ULTRA LINEAR mode:  120 watts

Total Harmonic Distortion

Maximum Total Harmonic Distortion at any power level from 250 mill watts to rated power output is:

0.5% for a 4 or 8 ohm load

Frequency Response

+0, -3.0dB from 10Hz to 65,000Hz

+0, -0.5dB from 20Hz to 20,000Hz


High Level: 450mV for 2.5V rated output

Power Amplifier Input: 2.5V for rated output

A-Weighted Signal To Noise Ratio High Level:

99dB below rated output Power Amplifier: 120dB below rated output Inter Modulation Distortion

Maximum Inter modulation Distortion if instantaneous peak output does not exceed twice the rated output, for any combination of frequencies from 20Hz to 20,000Hz is: 0.5% for a 4 or 8 ohm load

Input Impedance

High Level, 100K ohms Maximum

Input Signal High Level:  8V

Voltage Gain

High Level to Main: 18dB

Wide Band Damping Factor

Greater than 50

Rated Power Band   

20Hz to 20,000Hz

Power Requirements

100 Volts, 50/60Hz at 5.0 amps

110 Volts, 50/60Hz at 5.0 amps

120 Volts, 50/60Hz at 5.0 amps

220 Volts, 50/60Hz at 3.0 amps

230 Volts, 50/60Hz at 3.0 amps

240 Volts, 50/60Hz at 3.0 amps

Note: Refer to the rear panel of the TPA-120M for the correct voltage.

1st Stage Amplification Tube Compliment

2 – 6SN7   

Power Amplifier Tube Compliment

2 – KT150

Power Regulation (1st Stage Section)

1 - GZ34

Overall Dimensions

Width: 10.2 inches (34.0cm)

Height: 7.4 inches (24.7cm) including feet

Depth: 12.4 inches (41.3cm) including the Front Panel and Knobs

Weight: 60 pounds (27.2 kg) net, 75 pounds (34.0kg) in shipping carton

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

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