BEZ FC-6C33C OTL Monoblock Pure power amplifier

BEZ FC-6C33C Designer and Chief Engineer: Qingxin Huang

Output Transformer Less circuit

Tubes each block:
6Ж4 x 1 amplification
300B x 1
6c33c x 6

BEZ FC-6C33C adopts 6Ж4 pentode as amplification. 300B with single end transformer reflex loaded and balanced push six 6c33c tubes at each channel. When working on 8 ohm speakers, the power can reach to 40W ( 16 ohm speaker can reach to 50W), that means it can push most speakers very smoothly. Opened, detailed, pure sounds quality, it is very suitable to enjoy voice, orchestral music, light music, pop music, classical music etc.

This model adopts precise potentiometers to accurately adjust the voltage through 6c33c grid.
The circuit makes the mid-point voltage to 0 V, ensure the current via speaker equal to zero V. The secure design guarantee the safty of your high ended speaks.

Each channel adopts filament transformer and high-voltage transformer as power supplying. At high voltage power, 1500 UF/180 V capacitors x 20 are paralelled and plus inductor filter to finally get ± 116V DC high voltage.

This FC-6C33C also can finely adjust right and left voltage of 6c33c, mathing tubes by yourself(not each tube position, only the total of right or left).

Size (CM): 52X38X22

Net weigh: 30 kg (35 kg with packaging)



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.