Has anyone tried running headphones off of the speaker taps; specificly with something like the Torii junior or a pair of SE84CKC in a monoblock configuration? Usually use them for speakers but am interested in trying it a monoblock headphone system also. Would this damage the amp at all and would there be any sound degradation? The headphones are high impedance (200ohm 97db@1mw planar) and I have a 4pin xlr to banana plug adapter I used for solid state amps. Any help would be greatly appreciated  :)

The resistor value depends on a few different things:

A) how much power you have.

B) how much noise you have.

C) how efficient the headphones are.

D) the impedance of the headphones, which basically dictate how much power the amp will put out, so it effects C) efficiency.


In an amplifier with low noise and just a few watts, a value from 150ohm to as high as 1Kohm can be used depending on the headphone. Amps with more power tend to also have more noise. Both have to be reduced to be used with headphones, so you can expect the values to be higher.  

If you ask me to do it, and I don't have a pair of headphones in my collection that match yours, I will have you send the headphones to me so I can play the resistor swap game until I find the perfect value. I basically listen for the lowest value that has no hum and start there.  Raising the value will reduce volume and dynamics.  

Most headphones will get far louder than speakers and are dangerous when connected to speaker amplifiers unless "tuned" with a series resistor of the correct value which can only be found by ear.

Yes, no math can predict it because it overlooks the listener. I set up all of our headphone rigs by ear based on my comments above...

I sent a headphone amplifier to a big shot reviewer on one of the headphone forums years ago and he called in a panic that the amp was distorting badly. It turned out that when it arrived back here it was perfectly fine and the reviewer was actually hard of hearing. By over 6dB. I took the 6dB reducing resistor out and ran the amp wide open and sent it back to him. It was WAY TO LOUD and you could start to hear hum. He called elated that it was perfect and proceeded to give it rave reviews.

-Steve

Anyone using a speaker amp for your headphones via a voltage divider/resistor ladder setup.

Anyone using a speaker amp for your headphones by methods for a voltage divider/resistor ladder course of action MyKFCExperience.

Connecting dynamic headphones to integrated amplifier speaker outputs.

Would it be conceivable to utilize earphones on the speaker out's of an amp My Lowes Life?

myloweslife, do you have more detail about what you're trying to accomplish? Which headphones and which amp?

I am finding that Decware amps with headphone outputs (especially balanced) have more than enough power for any Dynamic headphone, and excellent power for normal planars like Audeze. Usually speaker outputs can be used if you're trying to power ridiculously inefficient planars like a pair of HE-6 or HE1000. In these situations, you can utilize an adapter like this one from Zynsonix:
https://www.zynsonix.com/Xev-Speaker-Output-to-Balanced-Adapter_p_16.html