GUSTARD H10

I upgraded the two transformer with Nuvotem Talema. The sound improve a lot (tone and timbre is the same but add speed dynamic and soundstage, better bass quality) and I just got rid of those Burson V6 opamp (Classic Dual, Classic Single and Vivid single), replacing them with something else. Change some Cs and my H10 is now finished. I dont need anymore modification (maybe some vintage oil Capacitors though). Great amp indeed.

The H10 is an excellent sounding headphone amp offered at a ridiculously low price. The design of this amp is for all intents and purposes a clone of the Violectric HPA V200 for about 25% of its price. You can do even better on the used market. I paid $195 delivered for a nearly stock mint one and it was a tremendous bargain. Some owners of the V200 and H10 have said that they actually prefer the sound of the H10 over the V200, however, this is of course subjective. Caveat, try to buy a stock one, because some have been modified with opamps that were not properly matched for the H10, which would result in these opamps exceeding the voltage of the H10, thus causing damage to the amp, while destroying the opamps.

Was your H10 stock, or was it modded with aftermarket op amps like those manufactured by Burson Audio? Their V5 op amps ran very hot in the H10 and would burn up. They'd even burn up stock resistors in the H10, due to the tremendous heat that the V5 op amps gave off. It turns out, the plastic covering on the V5 op amps actually trapped heat which led to them overheating. I have a stock H10 and it runs cool, even after hours of use. Also sounds great with my planar magnetics and higher impedance headphones.