Bella EXtreme 60 Custom
6C33 Mono Bloc Amplifiers

 

The Bella EXtreme 60 mono bloc amplifiers are a unique design that utilizes the 6C33 output tube. Originally used in the Russian Migs fighter planes, the 6C33 has since been incorporated into tube audio amplifiers and is now found in some of the most highly regarded designs. The Bella EXtreme 60 mono blocs are a highly modified version of the Antique Sound Lab SPM-60 amplifiers a uses a pair of these tubes operating in a push-pull configuration for a dynamic 60 watts per side of Triode power. Cathode follower output.

As can be seen in our construction details, only the finest passive audio components are used throughout. Like all of our Bella EXtreme products, the EXtreme 60 mono blocs carry on the tradition of superior quality and workmanship and built to a performance level unsurpassed by other products anywhere near it's price point..

 

 

Construction Details:

  1. Reference Grade Sonic Craft Platinum Teflon coupling capacitors 

  2. Reference Grade Sonic Craft Platinum Teflon innerstage coupling capacitors 

  3. Modified power supply.

  4. High-grade Panasonic low ESR power supply filter capacitors.

  5. Bybee purifiers found in the B+ voltage

  6. Mills non-inductive grid stop resistors

  7. Dale/Vishay CW cathode resistors for input/signal tubes.

  8. Dale/Vishay resistors used throughout.

  9. Fairchild "Ultra Fast - Soft Recovery" diodes in the power supply.

  10. VH-Audio Cryo-treated Pulsar internal wiring

  11. Cryogenic treated silver IEC connectors

  12. Cryogenic treated silver fuse holders

  13. WBT speaker binding post

  14. Russian 6C33 output tubes

  15. Powder coat Sapphire Blue, British Racing Green or deep Red face plate and transformer cover

  16. MUCH MORE!!

  17. PRICE: SOLD OUT

 

The next two pictures show a dry fit of a Bubinga (African Rosewood) chassis prior to any sanding, finishing or buffing.
Updated pictures coming soon.

These amplifiers are being custom built for use in our showroom and should be available August 2008

Below are some early pictures prior to the finishing of the Bubinga chassis.

 
OUTPUT POWER 50W per channel
Frequency responsible at 1W 18Hz--25000Hz + 1dB
Frequency responsible at full power
Circuit Design
 20Hz--22000Hz + 1dB
Push-Pull - zero feedback
Cathode follower output
Distortion at 1W/45W <0.8% / <2%
Distortion at full power <6%
S/N Ratio 86dB (1mV) ( with A weight 95db 0.6mV)
Input impedance 100K
Output impedance 4 and 8 ohm
Power request 340W MAXIMUM 115VAC
Input sensitive 1.2V
Fuse 5A SLOW-BLOW
Chassis Finished Aluminum
Dimensions in inches 15.75" X 10.6" X 9.5" 
Net Weight 42 lbs. ea.
Shipping Weight 48 lbs. ea.
Warranty 1 year parts and labor /60 days on tubes
 

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