Boyuu EL34 Amplifier - MT-34

Boyuu EL34 Amplifier - MT-34
* Push-pull
* MT-34 U$990
* MT-34 Special Edition U$1390

Specifications:
- Input sensitivity: 550mV
- Output power: 18W x2 (Triode); 35W x2(Ultra Linear)
- SNR: 88dB
- Input impedance: 100k Ohm
- Output taps: 4 Ohm, 8 Ohm
- Input voltage: 220V / 50Hz (can be customized)
- Power consumption: 230W
- Frequency response: 30Hz - 45kHz
- Tubes: 5Z4 x1, EL34 x4, 6N1J x3
- Size: 378W x 287D x 178H (mm)
- Packaging: 500 x 450 x 300 (mm)
- Inputs: 3 sets

Boyuu EL34 Amplifier - A10

Boyuu EL34 Amplifier - A10
* Single Ended
* Ver1 - U$490
* Ver2 - U$540
* Ver3 - U$530

Technical specifications:

• Output power: 12W x 2 (Ultra-linear)
• Frequency response: 20Hz - 28kHz
• Output impedance: 4, 8 Ohm
• THD: <= 1% (1kHz)
• Input sensitivity: 750mV
• Input impedance: 100k Ohm
• Size(WxDxH): 310x268x165 mm
• SNR: 88dB
• Preamp / driver tube: 6NJ2 x2
• Output tube: Shuguang (export version) EL34B x2, or PSVANE EL34
• Tube rectifier: 5Z4PJ x1
• Power transformer: 0.35mm lamination, EI96, 50mm stack
• Output transformer: 0.35mm audio use lamination (EI 66-36)
• Chassis: imported stainless steel mirror finish
• Stands - high speed diamond cut CNC aluminum
• Output: high quality binding posts

Features

• 6N2J preamp/driver stage.
• Shuguang EL34B output tube.
• Power transformer: 0.35mm SiFe lamination, properly aligned, multiple vacuum impregnated, for durability and noise free operation.
• Chassis - stainless steel, double layered  design, no-minimal surface screws.
• Output transformer - heart of a tube amplifier, for high end edition, comes with transformer case with potting compounding for shielding, protection and look. Finishing - powder coated with wrinkle finish.
• Alps volume control.

Versions

1. Standard version, PCB, power EI96x50, output EI66x36
2. Point-to-point wiring version, enlarged output EI76x40, better bass, control, dynamics
3. PCB version with enlarged output transformer EI76x40

Alps volume pot

Stainless steel chassis, potted transformers, precision cut chassis, excellent suspension

 

Input / output ports

Boyuu EL34 Amplifier - A9

Boyuu EL34 Amplifier - A9
* Single Ended
* Grade C - U$450
* Grade D - U$490

Technical specifications:

• Output power: 12W x 2 (Ultra-linear)
• Frequency response: 20Hz - 28kHz
• Output impedance: 4, 8 Ohm
• THD: <= 1% (1kHz)
• Input sensitivity: 750mV
• Input impedance: 100k Ohm
• Size (WxDxH): 310x268x165 mm
• SNR: 88dB
• Preamp / driver tube: 6N9PJ x2
• Output tube: Shuguang (export version) EL34B x2
• Tube rectifier: 5Z3PJ x1
• Power transformer: 0.35mm lamination, EI96, 60mm stack
• Output transformer: 0.35mm audio use lamination
• Output: binding posts

Features

• Power transformer: 0.35mm SiFe lamination, properly aligned, multiple vacuum impregnated for durability and noise free operation.
• Chassis - steel (or stainless steel for some versions), double layered  design, no-minimal surface screws.
• Output transformer - heart of a tube amplifier, for high end edition, comes with transformer case with potting compounding for shielding, protection and look.
• Power supply - full wave vacuum tube rectification (315V-0-315V), with imported SiFe cores as power and choke (CLC power supply), with imported Philips or Rubycon (may vary) power supply capacitors.
• Amplification - adopt and improve on classic Japanese design, with 2 stages of Triode common cathode amplification stages, capable of high voltage swings and high driving current.
• Alps volume control.

A9 materials

• Power transformers - using EI 96 - 60mm stack huge cores. capable of 200W power, with imported 0.35mm lamination high Gauss SiFe. Magnet wires are high grade OFC from big factories, with multiple tight layering. Have extremely low loss (low no load current), no rattling/hum/vibrations. Warranty for 2 years.
• Output transformer - multiple layered precision wined, using made in Japan ultra thin insulation (0.06mm, 2000V insulation strength), with classic series-input, and parallel-output characteristics, achieving output transformer requirements of high primary inductance and low stray inductance design. 2 versions - EI66-36 and EI76-40.
• Capacitors - imported electrolytic capacitors as power supply capacitors (Philips/BC, Elna, Rubycon and etc); uses audio grade coupling capacitors.