Boyuu 2A3 Amplifier - D60A

Boyuu 2A3 Amplifier - D60A
* Single ended, special edition
* U$1750

Boyuu 2A3 amplifier - A30

Boyuu 2A3 amplifier - A30

* Single Ended
* U$910

Features
* Output power - 3.5W
* Output stage does not use global feedback, ensure high fidelity sound
* 0.35mm SiFe core as power transformer - ensure supply stability
* Output tube current meter for monitoring and tube matching
* Medical grade 5Z3PAT tube rectifier
* Output transformer uses imported 0.35mm audio grade SiFe, EI86-50mm stack, reaching 13000 Gauss, much higher than general cores with only 7000 Gauss
* Potted output transformer for durability, shielding and anti-vibration
* Double layer chassis design, using 1.2mm stainless steel plates, coupled with 2 U-shape steel plate for a total of 2.4mm thickness that can withstand 70KG weight on top

Technical specifications
* Output power: 3.5W x2 (Triode)
* Frequency response: 30Hz - 36kHz
* Output impedance: 4 Ohm, 8 Ohm
* THD: <= 1% (1kHz)
* Input sensitivity: 750mV
* Input impedance: 100k Ohm
* Size (WxDxH): 366 x 300 x 185mm
* SNR: 89dB
* Net weight: ~15.5KG

Product design
* Gain stage: Shuguang 6N9PJx2
* OUtput stage: Shuguang export version 2A3C x2
* Rectifier: 5Z3PATx1 (different than 5Z3P, do not mix up)
* Power transformer: imported 0.35mm, EI105-60mm stack
* Output transformer: imported 0.35mm Hi SiFE EI86-50mm stack
* Chassis: imported mirror finish stainless steel
* Front plate: high grade CNC machined anodized aluminum
* Output jack: high grade binding posts