REISONG Boyuu F5 MINI tube Amplifier 6N1 Push 6L6 electron tube Single-ended Power Amplifier
Features:
1. Boyuu is one of the few domestic tube amplifier manufacturers that independently research and produce audio transformers. They employ the 'cross-composite winding method,' resulting in an output transformer leakage inductance-to-inductance ratio less than one-thousandth. This unique approach consistently surprises audiophiles in the same price range.
2.Utilizing brand-new 0.35 imported audio iron cores, with magnetic flux far exceeding domestic counterparts of the same model, ensures stable electrical conditions and guarantees superior sound quality. The iron cores are imported from Japan, and the enameled wire is sourced from Taiwan.
3.In the pursuit of an appealing sound, Boyuu sought reference from original treasures like Marantz M7 preamp and Marantz M8 power amp (factory number within 3000), Siemens antique PA systems, and Western Electric cinema amplification systems.
4.The tube amplifier operates in two modes: Single-Ended, providing a pure and natural soloist-like sound with relatively lower power suitable for home use, and Push-Pull, offering a wide and powerful choral ensemble-like sound with higher power suitable for various venues but with less delicacy than Single-Ended.
5.The rich and robust Boyuu F5 tube amplifier, using the 6L6, a beam power tetrode specifically designed for audio amplification. Amplifiers made with this tube exhibit a rich and transparent sound, solid bass, rich harmonics, and vivid colors, particularly excelling in portraying vocal and musical emotions, delivering a highly expressive and enduring listening experience.
6.Boyuu's F5 Single-Ended Tube Amplifier adopts the classic circuit of 6N1 pushing 6L6, presenting a clean and excellent sound. Coupled with Boyuu's independently developed and wound audio transformers, the sound reproduction is more natural and transparent.
7.In addition to 6L6, the Boyuu F5 tube amplifier is also compatible with other power tubes such as 6P3P, 6V6, offering versatility and a unique auditory experience.
8.The output stage utilizes no global feedback technology, enhancing sound reproduction accuracy. It is also compatible with power tubes like 6V6, 6P3P, 6N3C, etc. The power tube employs the 6L6 audio-specific power tube, and the output transformer core uses an imported 0.35 audio-specific iron core with a magnetic flux reaching 13,000, surpassing the domestic iron core, which can only achieve 7,000. The main body uses a 1.2mm thick, shock-resistant stainless steel plate.
 Specification:
Product Model: F5
Output Power: 8W*2
Operation Mode: Single-Ended
Frequency Response: 20Hz—335KHz
Output Impedance: 4Ω, 8Ω
Power Tubes: 6L6
Total Harmonic Distortion: ≤1% (1kHz)
Driver Tubes: 6N1
Input Impedance: 100KΩ (three sets of input signals)
Dimensions (Width × Depth × Height): 210×220×160mm