Better than I expected 
by Jawn Campbell from Morgantown, WV, August 2007
Music Background:  Recording Engineer

I purchased the HP4 in a pack with 4 AKG M80 headphones. The HP4 works well and sounds terrific..PLENTY of headroom. The 'mono' button allows you technically to send two separate mixes to the HP4..although I only use one. My only complaint would be the 'monitor level' knob. the ability to mute my monitors would be awesome, but i won't use this feature because the monitor feed isn't purely pass-thru. you can adjust the volume of the monitors from the HP4. I would have much rather had a passive monitor mute control..and perhaps used the additional amp for a 5th headphone channel. Nevertheless, it's still a great unit and a good buy.

  Great headphone amp 
by Tmoney from Chicago, IL USA, July 2006
Music Background:  Home Recordist, Musician, Previously Live Sound Engineer.

Very basic with just enough feature-wise to get by-- balanced ins and outs, monitor section, and mono button are very nice and quite useful. Great transparency and this amp is LOUD. With my interface at unity, I sit the pot at about 2-3 ticks up, of about 15 or 20. I love this thing. Pots do get scratchy, but this isn't the fault of the actual unit, it's a fact of working with audio.

 
by Jeremy Cimino , February 2005

its a nice little piece of equipment unfortunately it has started to sizzle when turning the voume knobs

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