I'm very curious about this amp, specially after the opnion ofe an experienced member of this community. Gustard H10 is presented as follow: GUSTARD H10 High-current Discrete Class A output Stage Headphone Amplifier Features: 1.H10 is a high-current discrete Class A output stage headphone amplifiers, each channel consists of two independent amplification circuit, has RCA inputs, balanced input, you can easily connect a variety of sources. 2 machine using a buffer amplifier plus pre-amplification stage main components. Buffer preamp gain adjustment function with four segments, with the four pairs of audio power output circuit tubes on the CPI, you can easily drive a variety of different impedance headphones. 3 using two 25W seal ring cattle, independent power between left and right channels, effectively reducing the left and right channel crosstalk. 4.AC115V/230V international voltage input. 5 Adjust the volume potentiometer placed at the back of the input stage, effectively shortening the audio channel path, reducing interference. 6 start-up delay, DC offset, overload, protection circuitry to ensure the safe use of the machine. 7 aluminum chassis, before grinding Shahoulasi processes, machines all black. 8.RCA single-ended and balanced XLR inputs, input switching and gain adjustment. 9 tri-band balanced sound correctly, the output resistance low current, suitable for most headphone mix. 10. Rigorous design, reasonable layout, elegant lines, solid materials. Technical Specifications: Signal Input: 2x XLR female, balance 2x RCA, unbalanced Maximum input level: +21 dBu, impedance 10kΩ Input impedance: XLR: 10kΩ, RCA: 68kΩ Input Sensitivity: +6 dBu Main amplifier gain: +8 dB Main amplifier gain adjustment range: -4 / +2 / +8 / +14 / +20 dB Frequency response: 0-55kHz (-0.5dB) Damping Factor:> 400 @ 50Ω Dynamic range:> 128dB (A-weighted) Background noise: <-100dBu (A-weighted) THD + N (1kHz 1W @ 100Ω): <0.00035% THD + N (1kHz 0.5W @ 32Ω): <0.0007% Crosstalk:-110db (1kHz) Headphone Output: 1x 6.35mm TRS Jack output powerifferent impedance has different output power Output power: 570 mW (600 ohm load); 2200 mW (100 ohms); 2700 mW (50 ohms); 2000 mW (32 ohms); 1000 mW (16 ohms) Power supply voltage: 230V AC/115 AC; 50/60Hz Power consumption: ≤ 20VA Machine Standard: GB a three-prong power cord Machine size (not included prominent part): length × width × height = 273mm × 190mm × 70mm Package dimensions: length × width × height = 385 × 280 × 150mm Weight: Net Weight 3.3KG, including packaging 4KG Look really nice to me. However, wold this be an amplifier clone of Violectric V200 or just something that has used V200 as a start pointing?I find then visually very similar. V200 view by inside: I really would like to know opinions about this amp. My english is not very good, so sorry.