So here is the Pros and Cons of PA2V2 headphone amplifier.
Pros -
1. It definitely shapes the output music by adding some oomph to bass. Listening to bass heavy tracks are bliss as there is NO distortion in lower frequencies.
2. Clears and reshapes the high frequencies - Treble. Hence it becomes more clear and somewhat a little less due to which you don't feel ear fatigue.
3. It doesn't color the sound way too much and sounded close to the original music output. The changes I mentioned above are good as they removes the distortion.
4. Pretty much powerful for any headphone out there, I used Sony MDRV55 40 ohm with just around 1db gain on amplifier. So can say any headphone till 120 ohm will sound loud enough.
5. No hissing sound even with maximum sound on AMP.
6. Battery life is impeccable. More than 80 hours of continous listening on 2 Ni-Mh AA Betteries.
7. When using in Car between Aux cable and player. You will be amazed how your car stereo sounds.
8. Lifetime warranty. The Amp is construction is so simple that one can even solder components if one goes bad.
9. The person Gary makes each and every AMP by hands and may be the nicest person you may find online. Exceptional customer service.
Cons -
This amplifier is said to be portable. However paired up with any player out there and you may not be able to keep it in any pocket. Unless you have Cargo pants.
Below 10% of volume levels, there is noticable channel imbalance.
When charging batteries in AMP, there is no indicator.
Summary -
This Amp can be used anywhere from high end home theatre systems to phones, mp3 players, Radios, Car stereo, Watching movies at night with headphone from TV.
Below is the link of his website.
http://www.electric-avenues.com/
There is a good news for bike riders
He also makes amplifier for bike riders where you have 3 inputs, 1 for music and 2 for walkie talkies. Gary calls it Amplirider and i think just 5usd more.
Sent from Android "a google product"