I recently saw this new ish headphone tube amp from original audio which has some interesting specs and capabilities. Also a decent price tag for balanced output, pre out and Bluetooth with KT88 or EL34 tubes depending on the model. The only dedicated HP amp with KT88sI know of is the new Cayin HA-6A which obviously has even more features but also 2.5 times the price.
Has anyone here come across these amps or this company Original Audio at all?
Just came across this amp (OPA-4A) on Audiophonics. Looks really nice build quality-wise. The price bit is arguable though for an item from a manufacturer that doesn't even seem to have a website...
Wait, found the website, English version is unavalable though, says something like "Can't connect to the database"
What is even more concerning is that on Aliexpress the item description says:
"The tube amplifier must be connected to the speaker before running, otherwise the power amplifier may be damaged."
Which is quite typical for "speaker/HP" amps, and, if my understanding is correct, means that output transformers are not used for HP output. Which means it won't work well for low impedance headphones.
I tried to find a manual on their "website", but no luck.
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