# Power output of GCHA headphone amplifier **URL:** \ **Category:** Everything Else\ **Created:** [April 14, 2013, 8:03pm UTC](https://forum.psaudio.com/t/power-output-of-gcha-headphone-amplifier/77 "2013-04-14T20:03:03Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![lmf22](https://avatars.discourse-cdn.com/v4/letter/l/5fc32e/32.png) [@lmf22](https://forum.psaudio.com/u/lmf22)\ **Post date:** [April 14, 2013, 8:03pm UTC](https://forum.psaudio.com/t/power-output-of-gcha-headphone-amplifier/77/1 "2013-04-14T20:03:03Z")
How much power does the GCHA output to a 60 ohm headphone? I am trying to find out if it is optimal for my Audeze LCD-2, which is 60 ohm with a sensitivity of 90 dB/1 mW. Audeze’s website suggests "Optimal power requirement: 1-4 W." I am currently using the GCHA/LCD-2 combo and sounds great. Just wondering if the GCHA has sufficient power, or if I could get more from the LCD-2 if I upgrade to a more powerful headphone amp. ---
**Author:** ![Paul](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/paul/32/6_2.png) [@Paul](https://forum.psaudio.com/u/Paul)\ **Post date:** [April 15, 2013, 5:48am UTC](https://forum.psaudio.com/t/power-output-of-gcha-headphone-amplifier/77/2 "2013-04-15T05:48:41Z")
It easily does what you need but I do not remember the exact number. Let me check. ---
**Author:** ![Elk](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/elk/32/1240_2.png) [@Elk](https://forum.psaudio.com/u/Elk)\ **Post date:** [April 15, 2013, 3:05pm UTC](https://forum.psaudio.com/t/power-output-of-gcha-headphone-amplifier/77/3 "2013-04-15T15:05:15Z")
The GCHA is silly powerful and capable of 10W output. Any ortho, including the Audeze LCDs, is a trivial load for this unit. ---
**Author:** ![lmf22](https://avatars.discourse-cdn.com/v4/letter/l/5fc32e/32.png) [@lmf22](https://forum.psaudio.com/u/lmf22)\ **Post date:** [April 15, 2013, 9:39pm UTC](https://forum.psaudio.com/t/power-output-of-gcha-headphone-amplifier/77/4 "2013-04-15T21:39:07Z")
10 watt output?! Whoa… I had no idea. But it does have that huge power transformer inside. Now… if only PS Audio would update the GCHA with a modern USB DAC 🙂 ---
**Author:** ![Elk](https://sea1.discourse-cdn.com/flex015/user_avatar/forum.psaudio.com/elk/32/1240_2.png) [@Elk](https://forum.psaudio.com/u/Elk)\ **Post date:** [April 16, 2013, 3:39pm UTC](https://forum.psaudio.com/t/power-output-of-gcha-headphone-amplifier/77/5 "2013-04-16T15:39:09Z")
Yes, a truly huge transformer. It is probably nearly almost all of the weight of the unit.