I've been told that getting a Schiit Ragnorak or an Audio-GD Master 9 might melt my headphones. I was also told that it was more the current that would melt headphones and not the wattage. Now my electrical knowledge is pretty rusty and to be honest it was never that great to begin with. I remember lots of people pairing my same headphones with the Soloist which puts out 4000mW @16ohms, which is much higher than the maximum input of my headphones and none of them reported any problems yet the SE output of the Master 9 is 2500mW @40ohm. This leads me to thinking that the gentleman who told me about worrying about the current is correct but again I'm not expert or anywhere close to that on this subject. I figured some of you could pass along some wisdom/knowledge to me. I'm also curious if there's a formula or a general rule of thumb that I can go by so that I can better calculate this?
Here are the specifications for my headphones and I only plan to connect them via singled-end connection (6.3mm jack), Fostex TH-900:
Impedance: 25 ohm
Sensitivity: 100dB / mW
Maximum Input: 1,800 mW
These are the amps I'm considering:
Schiit Ragnorak (These are Preliminary Specs):
||>130DB (Input short, XLR mode)|
Low Gain : +14 DB (XLR)
|Headphone amp Output Power
(Single-ended , Pure Class A )
40 ohm: 2500MW
100 ohm: 1050MW
300 ohm: 350MW
600 ohm: 175MW
Thank you in advance for any guidance you can give me and I greatly appreciate your time in this matter.