$25 Tube Amp From China..
Nov 24, 2012 at 10:56 PM Post #3 of 9

PurpleAngel

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On the website Rockgrotto, there are guys there that are really into modifying these little tube amps.
Might want to post questions there.
 
Jan 23, 2013 at 3:25 PM Post #4 of 9

Ponczomarinero

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Hi
 
Got it. Brought me excellent sound (value for money). That amplifier has one faulty thing. Someone replace red LED diode for blue one. It is mistake - red diode is needed for reference voltage to the lamp. My went dead after few days. 
In general that make or remake is better than bravo amplifiers - better capacitors and resistors. Look for amplifier with small yellow box (relay) it is make 2. Contains 12au7 and 6922 switch for different type of tubes. I haven't regret I have bought that amplifier. With my Beyerdynamic 990pro sounds gorgeous even with chineese tube. Lot of fun. There is a lot of mods to improve sound quality.
 
Matt
 
Jun 10, 2013 at 12:30 PM Post #8 of 9

HPiper

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I found one in about 10secs. Just search for new tube headphone amplifiers. And current bid was less than $20. I got one of these and it is just okay, at the price I was surprised it even worked at all, but it did. Sound is nothing to write home about but I just wanted a backup incase my main died so for that it is good for me. Just a warning, it does get pretty hot if you leave it on for a while, I ended up unplugging it as the power switch was almost to hot to touch. SO don't go grabbing anything if it has been running an hour or so.
 

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