Headphone Amplification

Hey guys I was thinking of getting some kind ofa guide for the op amp based amps (mainly portable commercial design) but other amps are welcome too.. Headroom: Micro Module: AD822 Destop Moldule: OPA2134 Home Moldule: OPA2134 Max Module: OPA627 Pocket Amp 2 V2: LM4881 LaRocco: Pocket Reference 2: AD8610* Xin: Super Macro IV: AD8397* Super Mini: AD8397* Super Micro: ??* Meier Audio: Porta Corda 3: LM6171 HAII MKII/SE: LM6171 Prehead II MKII SE: LM6171 Portaphile: V2/X^3: AD8610 Ray Samuels Audio: Hornet: AD8397 SR71: AD8610 XP7: AD825??* HR2: AD797* Note the amps that hagev an * by them denotes that the op amp can be s…

AudiogoN ForSale: Moth Audio S2a3 Ready for horns.

New? Notice: 100 units only. Linky go here.

Well, for whatever reason, I had gotten sick of the Par-Metals case I had housing my PPA v2 + STEPS. I had wanted to do something with wood, but could decide what. I had picked up some Zebrawood for another pair of woodied Grados, but was unhappy with working with it in round shapes. So I decided it had come time to use the wood for the PPA's new enclosure. Before: After: I'd have to say it came out better than I could have expected. Needless to say, it hasn't changed the amp's performance... it drives my HD650/Zu just as well as before. But it is a hell of a lot more fun to look at!

link Comments?

Hello! Please let me know which you would prefer and why: 1) The CIAudio VDA-2 DAC and VHP-2 headphone amp, both with VAC1 power supplies. OR 2) The HeadRoom Balanced Desktop. This model is now only available with the Home Modules and Home DAC. I will be feeding the DAC's optical inputs via a SqueezeBox Classic. Headphone suggestions welcome. Is going balanced worth the hassle of recabling headphones? Music preferences: Primarily Rock and Acoustical. E.g. Rush, Pink Floyd, Jose Gonzalez, Dire Straits. Channel Islands Audio HeadRoom Balanced Desktop Amp @ HeadRoom - Right Between Your Ears Thanks for your feedback!

I have tried every possibility to optimize the circuit, but finally STAX has chosen the worst one. I'm pretty sure that STAX has gone with SMDs, it all fine, most parts in working will not generate lots heat, also SMDs significantly reduces the distributed inductance caused by PCB board through holes. ...... there some analyze and questions: 1, 4 large sized 7W 47kΩ resistors work as plate loads for 6SN7s, but higher value must be better, for example, two series 33K as 006T, or at least 62K 7W will far better than 47K, because 47K means too much current flow through 6SN7s, in my simulation is 9.5-10ma (grid at -9V), it's fine for 12AU7 or 12BH7, but 6SN7GT....…

Warm? Neutral? Edgy? How does it drive cans like the Senns and 701s? Guess it's pretty clear that I'm looking for a space saving SS amp for a bedroom setup. Not an easy task IMO. Anyone got experience/thoughts on this one?

I noticed on Headamps website that the new version of the Aristaeus includes numerous improvements in parts and build quality. Has anyone here heard a V1 and V2, as to make any comparison. What parts have been changed and such? Justin or maybe the denizen electrostatic gurus. Thanks, Gary.

I have been reading a lot of post, reviews and opinions, they have been informative, helpful, confusing and sometimes funny. Yesterday I was reading a post and I saw a picture of a cat showing his balls!! Anyway, I have done some research on amps, headphones and cd players. I came up with a system based on reviews and opinions only. I will probably not get a chance to hear first then buy. So for now I have to go by, like I said reviews, opinions and recommendations. So this is what I came up with: I could go cheaper or more expensive, this just seems to be solid, but I am at best, a amatuer. Einar Sound VC-01i Amp Audez'e LCD-2 Headphone Bryston-BCD-1 CD Player T…

Looks like a very potent candidate, but, alas, the only source of info is a sole thread on SBAF. Hopefully through this fora, more insights and opinions will be gathered from this product. I've mostly heard positive feedback from the EC products, save for some quality/longevity issues with the original Zana Deux.

http://img.photobucket.com/albums/v474/Romanee/small%20tube%20amps/audiokitsLunchboxLaconic_01.jpg

http://www.head-case.org/forums/headphone-amplification/7028-mysteriously-musical-amplifier-moth-300b-problem.html Well, I'm hearing the same symptoms on my Stax T1S now. This amp has no output transformers so... what's going on here <.< And no, its not just the new Shuguang CV181-Z that's doing this, the tube I was using before this was doing it too, albeit less audibly (probably because its only half the size).

I have a two speaker system and I'd like to incorporate a STAX setup into it. I'd like to continue to use my preamps remote control, and I want to use my preamps XLR output vs. my Rec Out's because well, I'm just funny like that. Is there a preferred way to adjusting the two volume controls when using a preamp and STAX amplifier? I know the 717 & 727 have a volume bypass switch, but I'm trying to open up my options to what amp I eventually get. Thanks

This looks interesting...

is this worthy of consideration as an all-in-one dac/head-amp option for low-impedance single-ended headphones? https://www.bursonaudio.com/products/conductor-v2-plus/

Anyone have any feelings they'd like to share about this conflict? http://www.head-fi.org/forums/showthread.php?t=233352 Basically Headphonia completely ripped off Dr. Meier's design for the Porta Corda III. I don't get any joy out of portable amplification but it was an interesting thread to read through.

I had a fun 20 mins chatting with Mikhail, speccing up a high voltage Supra for my newly acquired R10's. After saying 'yes' to most of the options (mostly having Blackgates all around), two things that were sticking points for me were the Plitron transformer ($900 vs $250 for an upgraded Supra Transformer) and Audio Note coupling caps (again around $7-900 - bit hazy here, vs $360 for V-Cap Coupling Caps). My question for those who have been able to do a comparison, is what difference does a Plitron transformer or Audio Note coupling caps make and is the extra cost worth it? If you had to choose one upgrade, which would it be? I'd appreciate your thoughts on this …

http://www.6moons.com/audioreviews/eddiecurrent/ec01.html This is an outstanding review for the EC-01. It is very well written and votes very well for EddieCurrent.

The title says it all. My SRM-252S seems to be failing, indicated by hum. (It’s the 120V version.) I’ve been discussing it on the Stax thread in Headphones. While I lack the expertise & all of the tools to troubleshoot the amp, I do possess the tools & enough skill to refurb a working SRM-1/Mk-2, a unit I’d get from eBay. I understand the primary work is to replace the caps. Any experience?

http://www.tubedepot.com/nos-4212e.html Holy Shit! $2000 for a pair.

So apparently they followed the "Glass FX" tube DAC and integrated with a headphone amp. Dual 12AX7As. http://www.jolida.com/product/glass-fx-tube-headphone-amplifier

Hello I am pretty new here and am seeing some really impressive knowledge on this site. I looked but did not find anything on changing the voltage from 100 to 117 on an RSM717. I saw a post on the 727 which someone also said was similar. It looked like on that, the leads were cut from the transformer and that did not look like fun to do. I can measure resistance, voltage, etc, but don't have the expertise to do what some of you guys can do. If there are step by step instruction (esp with photos) I can do it. I don't see a lot of posts that are dumbed down to that level though. I also was wondering if there are any mods to be made on a 727 that would make it a b…

Complete noob needs more advice please. I need a budget stationary headphone setup for my home exercise bike. I need isolation as the bike is very loud and I already have some mild high frequency hearing loss. I'm thinking of getting an oppo DV-970 HD universal DVD player for a source. And etymotic ER-4P In Ear Monitors for their isolation. What should I use for amplification? Does the line out jack have enough power that I would need an attenuator instead of an amplifier? What about a Cmoy type amp, on ebay, with the builder optimizing a low gain for the ER-4Ps? Or do I need a real amp, like a headroom Micro amp? If I bought the Headroom, do I really need…

So I'm going to be getting some Sennheiser HD650s soon, and I'll be plugging those into a Pioneer VSX-80TXV receiver, which is going to be connected to my computer that has an HT Omega Claro+ sound card. But I don't have any amplification for the headphones. My budget for an amp maxes out at 200, which I realize isn't a lot, but is there still an option at or below that price that will still net me a sizeable improvement in sound quality?