I've wanted to upgrade to a better headphone amp now for a while and finally have decided to move ahead with it. Right now I'm using a schitt lyr with some HE500's. I'm looking to go a bit higher up the food chain. Originally I was set on getting an EF-6 but here lately I've been curious about...

I've been using the schitt mjolnir and Lyr for a quite a while now and am ready to move on and up the amplifier food chain. My main set of cans are the HiFi man HE500's which I love and was pretty set on a EF-6 to power them after reading some good things about it. Recently though I became...

Recently my address has changed and since hooking up all my gear I've noticed something strange which I've never encountered before. My mjolnir is producing a horribly obnoxious buzzing sound that is very loud. I also have a lyr and can plug into the exact same outlet and not experience any...

A while ago I had to buy a replacement cable for my HD600's so I decided to cut the headphone jack off of the old cable so I could see the wires. I was expecting to see 4 wires on each side since I  thought I had read that it was a 4 conductor cable or whatever they call it but when I cut off...

Little backstory first. I got into higher end headphone listening about 9 years ago starting with the cheapo Koss headphones everyone here recommends so much moving on from there to the Grado SR60 and finally to the Senn. HD600's. By that point it was clear I needed to start thinking of a higher...

If a an amp is putting out 100 watts at 8 ohms what would be a reasonable guess of power at 300 ohms or 600?

Is it possible to bypass the DAC of an MP3 player? I'm assuming that it isn't and if it is it's probably a lot of trouble and not worth the attempt. 

I know my question is kind of subjective here but was hoping someone could chime in on this a little. My headphone setup has consisted of the same CD player source now for close to 10 years which is a Music Hall MMF CD-25. When I first got into head fi it was highly recommended as a great bang...

I've been using one of those Music Hall MMF CD-25's now for almost 10 years and have really enjoyed it but when I started to think about upgrading my phones to something better, currently HD600's I wondered if maybe my source could be a bottleneck if I go much higher up the headphone scale. Plus...

For a while now I've been researching different headphones and thinking of upgrading from my Sennheiser HD600's to something better but then I started to think well maybe I should possibly be considering an upgrade of my source. I've been using the same CD player now for almost 10 years, a Music...

The other day I saw a thread on here about a guy who decided to try powering his Sennheiser HD600 from his speaker amp and said that it had worked out really well. That got me curious and I decided that it was something I would be interested in trying but before I tried it with my HD600's I...

I stumbled upon an old thread on here about someone running their headphones off of a speaker amps speaker taps and it got me curious about trying it out. Does anyone know if the stock cable that comes with HD600 is a 4 conductor cable or is it 3? If it's 3 I'm assuming you can't really make it...

I've just recently purchased a Lyr and never owned any amps with tubes. The one I ordered came with the NOS tubes and I was wondering if there's any kind of burn in time with them. Anyone know if these improve with burn in time or what?

How do the HD555's compare to the HD448's and Shure SRH440 in sound quality? Are they a better deal in the up to $100 price category? 

Several months ago I posted about some "decent" cheap phones and got some good advice. I'm now in a position to buy something a little more expensive as I try and make my way back up the food chain to audiophile headphones I used to own. I'm interested in pretty much all phones in the price...

What is the point of Dual Mono amps if your not going balanced? What advantages would you get with a dual mono amp? I would assume there would be more power but I am not real familiar with the technical side of amps and their topologies. Anyone feel like explaining why an amp builder would go...

I'm looking to get a decent set of cans for just using with the computer without an amp. I know in the price range I'm looking at their really aren't many options and I know not to expect the greatest sound but I know their is decent sound to be had at my price range which is a whopping $30. So...

Who makes some of the more powerful headphone amps? Doesn't matter if its solid state or tube, curious about both. Are there any amps that put out like 1.5 watts or more per channel at higher impedences between 300-600 ohms. Would that kind of power be safe for headphones? 

I got into this audio hobby around 2003 or 2004 starting with a very low end Headroom Airhead. Eventually upgrading to a Headroom Little and living with it for probably a year a half before finally upgrading again to a Perreaux SXH1 that I purchased sometime around mid 2004. I loved the amp at...

I was just curious if someone could explain to me why a low impedance headphone like the Grados require general amounts of current to sound there best while higher impedance cans such as Senns and Beyers require higher voltage. Wouldn't the higher impedance cans require both? Just curious, never...

I've been using a Music Hall CD25 for my "reference" source ever since I got into this hobby and I believe that it has a 24 bit 96K DAC built in, if I'm wrong about that I appologize in advance but my question is whether or not adding a DAC would realize better sound quality or if its a purchase...

Ever since I got into the headfi hobby I've always been curious about tube amps and what this magical sound is that they deliver. I've been threw several amps before I finally realized my "dream" solid state amp with the Solo SRG, mind you I aint saying the best there is but I feel pretty...

Looking to get a pair of portable headphones for an mp3 player. The criteria I'm looking for is good sound straight out of the headphone jack. Will not be using them with a amp. Not interested in any IEM and would like to keep whatever headphones I end up with fairly small. First one that popped...

I was wondering if anyone knows exactly why the K701 is so difficult of a headphone to drive when compared to other headphones in its class. The sensitivity according to the AKG website is 105 db. while the Senn. HD600 is only 97 db. and my SR225's have a sensitivity rating of 98 Db. which makes...

I was surfing Graham Slees website and noticed a new spec he had listed for one of his amps which was input sensitivity at different impedences. I looked it up trying to figure out exactly what it was but couldn't really read anything that cleared it up for me so can anyone clear it up for me...