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Product Description

Efficient way hybrid to meet with artificial realistic and natural sound.
T Series Combine TUBE technology synergy with soild state technology to achieve with new sound deimension

The superior quality of the "EH"
tubesound effects are world renown for the analog sound and their line of premium tubes continues in this tradition of classic tone.

Preamp Vacuum Tube
6922EH (also E88CC)
High frequency twin triode preamplifier tube used in home & studio and hi-fi equipment.

Electro Harmonix the leading manufacturer of vacuum tube in the world steadily improve the quality audio tubeare all new design and are of excellent quality. and well acceot in the music instrument. Studio & Home use mix & match with high grade ELNA capacity for audio grade and world leading powership from SANKEN to achive with efficient sound and performance

We invest take performance seriously that is why we do what we do to prevent listeners from enjoying the full potential. HARMOTECH solve this problem with our own patented of high grade connector component. flexible find tune with high quality crossover network.


Number of channels 2
Amplifier class AB
Output power in 4 ohm 2 x 300 W RMS
Output power in 2 ohm 2 x 480 W RMS
Frequency Respond 10 Hz - 100 kHz
Crossover Range 40Hz - 250Hz
Total Harmonic Distortion <0.05%
Signal to Noise Ratio (A wtg) Ref Rated Power 4 Ohm > 100dB
Input impedance 22 kohm
Damping (25W 4X4Ohm 100Hz) > 300
Input sensitivity 0.3V - 7V
Phase  0 ~180 degrees cont. variable
Efficiency at rated  2Ohm Stereo 61%
Fuses  25 A x 2
Dimension (W x D x H) 483.8 x 224 x 67.1 mm


CEA-2006 Compliant: CEA-2006 Guidelines
Number of Channels: 4
Rated Power
(RMS Continuous Power):
100 Watts x 4 @ 4-Ohm
150 Watts x 4 @ 2-Ohm
300 Watts x 2 @ 4-Ohm Bridged
Total Power
(Sum of Rated Power):
600 Watts RMS
Dynamic Power
(PVC/PowerCube® Measurement):
Bridgeable: Yes
Efficiency (average):  
Crossover Controls: Front Channels: Variable 50Hz - 500Hz @ 12dB/octave
Rear Channels: Variable 50Hz - 500Hz @ 12dB/octave
Tone Controls: 0dB to +18dB @ 45Hz
Signal Input: Low Level: 2 RCA Pair
Signal Output: Low Level: 1 RCA Pair
Power Input Connector: Block
Power Wire Gauge: 4 AWG
Speaker Output Connector: Block
Speaker Wire Gauge: 12 AWG
Heat Sink Type: Cast Aluminum
Cooling: Convection
Remote Controls: n/a
Visual Indicators: Power
Circuit Topology Class: Full Range Class-D
Frequency Response: 20Hz to 20kHz +/-1dB
Shipping Weight: 7.038 Lbs.
(3.19 Kg.)
Dimensions (HxWxL): 1.97" x 6.77" x 11.06"
(5cm x 17.20cm x 28.10cm)


Compatible Woofer Configurations
The below woofer wiring diagrams are compatible with this amplifier and are designed to optimize power output. The diagrams were selected simply by choosing woofer configurations that match the amplifier's recommended speaker load. Care should be taken to select woofers with a total power rating that can safely handle the amplifier's RMS power output.
The below diagrams optimize this amp for its lowest recommended BRIDGED/MONO load.
This allows FRONT channels to run STEREO speakers while REAR channels run WOOFERS.
     4Ω Amp Load Diagrams