TGM70 class A monoblock power amplifier

This TGM70 is loved by most regular customers. It provides powerful bass, wide sound density and meticulous transparency.

Two groups of RCA sockets set up at the back and front respectively

DC power supply filament of GM70.

8 ohm output, noise voltage is lower than 2 millivolt


Chinese Nanjing oil filled capacitors

American made AB Carbon Resistor


Chinese high quality red resistor for military use


BEZ DT-35 single-ended push transformer

Primary impedance
(K ohm)
Secondary impedance
Frequency Response
steel sheets width× lamination (mm)

Net weight (kg)

Available for tubes

DT-35 single end pushed/BEZ





6V6/6P3P/6P14/EL34/2A3/300B push-pull

push-pull or single end

Example of BEZ made amp: 2A3/300B push 211/845.


BEZ power transformer: 460WA10

BEZ made
Power Transformers

Available for tubes
(screening layer between primary and secondary)
Steel Sheets width× lamination (mm)


Size (mm)
mono amp /GM70





GM70 x 2

PSVANE 300B X2,transformer pushing,can be replaced with tube 2A3B/2A3C

6J4P x 2 as amplification, can be replaced with 6Ж4/6Ж8/6AC7/6J8P/6SJ7/6P9P/6л9/6AG7/6AK7

5Z3PA X2 can be replaced with 5U4G/5Z3P/274B/5Z2P/5Z4P


Technical data:

Output power: 2 x 30W

Output transformer: 100W single ended

Power transformer: 460WA10

Output power: 30W x 2

Frequency responds: 20Hz-25 KHz (±2dB)

Sensitivity: 1.2V

Distortion: when 18W, less than 2%

S/N ration: 95dB

Input impedance: 85K

Output impedance: 4 ohm/8ohm

Power consumption: 266W x 2 (115V/230V/60Hz/50Hz)

Size: (cm) 27L X 52W X25H

Net weight: 23KG x 2

Gross weight: 27KG x 2


BEZ is an amplifier audio supplier. After establishing the team in 1997, BEZ quickly became a well-respected maker of amplifiers in China. We carefully select components in order to contribute to sounds qualities. These components could be new or used. The used components mainly come from military and they have outstanding performance on sounds. We measure, test and experiment our collections to provide more ways for hobbyist to enjoy music.



We use DHL/UPS/Fedex/EMS.

Item located at china warehouse and item will be ship from China.

Items will be posted within 3 business days after payment confirmed.

A tracking number will be provide to customer so customer can review where is the item till it will be delivered.

Once receive the package please check whether the amp is good or broken.

Please contact for any inquiries before the purchase - [email protected]


Return policy:

If the item shows up defective or damaged, please email us immediately.

We offer 1 years warranty for the amp (3 months for tubes).

Defective situation must be reported to seller within 14 days upon receipt.

Returned packages displaying an invalid or expired will not be accepted.

Returned item should be in its original box with all packing materials and shipped to us via traceable means.

We carfully inspect returned items upon receipt before issuance of refunds or exchanges.

Shipping and handling charges, insurance are not refundable in any case.

Buyer bears all shipping charges.

We are no responsible for any consequences if the amp has been modified and changed by customers.

If you have any question regarding the products and service, please email us through eBay system before you leave feedback. We will try our best to solve the issue with you.