Spiral Out
100+ Head-Fier
- Joined
- Dec 31, 2013
- Posts
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- 32
No problem! The HE-400's are supposed to be awesome!! Enjoy!
Very basic stuff. I'm more interested in specs specifically what chip(s) it uses to amp the headphone output.
Onkyo TX 8511 headphone output is the speaker output via 390 Ohm series resistor. (will give a little boost in the bass for DT 880/250)
Well, I just ordered HiFiMAN HE-400So, more tests to come...
Thanks for sharing man!
Be careful about using a receiver. One thing is that they usually do not have a separate amp for the headphone jack but instead have resistors in series between the amp itself and the headphone jack. So one asks, why and is there a downside.
Most headphones cannot handle the enormous power levels that can come out of receivers/speaker amps. So to protect the headphones and not increase the cost of the product by incorporating a proper headphone amp, resistors are used to limit the power. The downside is that dynamic cans do not have a flat impedance curve. So a can that has an impedance peak in the bass will have a bass boost that one might think sounds good, but experienced ears will hear a less controlled bass due to the loss of damping resulting from that resistor. If you put those cans directly on the speaker taps and turn up the volume, you risk hurting your ears and smoking you cans. Orthodynamic cans like the HE-400's that you are getting tend to be resistive and have no such impedance curves and should not have issues with FR peaks or damping. Orthos tend to be less sensitive so many people will put them directly onto the speaker taps of a lower power amp like an Emotiva Mini. A Can like an HE-6 can take a lot of power, much more than the HE-400. I'd be very careful of putting any cans directly on the speaker taps of something that can deliver as much power as the Onkyo. You would have to learn about figuring out the proper L-PAD or T-PAD as appropriate to use with the exact combination of Amp and Cans. I have a pair of HE-500's hanging of my Vali and it works well, although not earsplitting loud, I believe your HE-400's will be more sensitive, hence louder.
Edit: I see more info was added to this thread as I was typing up this post.
Good post. Very helpful. Sounds like I'm going to need to stick with Vali after all that hype of mine
Anyone here experience a case where the vali started to ring w/o touching it? I have to unplug and re-plug in the headphone to get it to go away.
I emailed Schiit to see if they'd do a microphonics dampening kit. Curious to see their response.
Hi Guys,
According to micro-phonics issue you can do a simple mod.
Take some silicone tubing (like the ones used in medical stuff), cut the tubing in sizes of the vali tubes then cut them in length, so you can wrap them around the tubes.
Voila, no more ringing