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Pass Labs HPA-1?
This was written up in the latest Stereophile. Anyone own/heard one? Latest news? https://passlabs.com/products/amplifiers/headphone-amplifiers/hpa-1- Frihed89
- Thread
- Replies: 1
- Forum: High-end Audio Forum
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Transparent cabling?
What is the most transparent headphone cable you have ever owned, one that completely gets out of the way of the signal? I have ICs in my speaker system that do that, made by Crimson electronics in the UK. Unfortunately, it is quite stiff because it consists of small number of fairly...- Frihed89
- Thread
- Replies: 0
- Forum: Cables, Power, Tweaks, Speakers, Accessories (DBT-Free Forum)
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Cable adapter for Hifiman HE-500?
Does anyone make a strictly mechanical adapter (no cabling) to connect a mini-XLR connector (like the one on Audeze cables) directly to the weird headphone cable jack on the ear pieces of the HE-500? I've only seen adapters that include a length of cable. I don't want that. This could work in...- Frihed89
- Thread
- hifiman-he-500
- Replies: 0
- Forum: Cables, Power, Tweaks, Speakers, Accessories (DBT-Free Forum)
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MPX3 Slam SE: which electrolytics should I replace with Blackgates?
I've attached a pic of my original MPX3 Slam SE. Since I took this photo I've replaced the Sprague coupling caps with Audio Note copper in foil caps; disabled the high power switch; and added bleeder resistors on the large PS storage caps. But now I am wondering if it's worth replacing...- Frihed89
- Thread
- Replies: 6
- Forum: DIY (Do-It-Yourself) Discussions
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Calling Moth 2A3, s2A3, si2A3 Owners
As Craig has plans to re-introduce an updated version of this amp, I am wondering how well the older versions drive the new breed of planar-magnetic headphones and what headphones you have found to be most suited to this amp? I think Craig is also looking to develop a heater supply that is less...- Frihed89
- Thread
- Replies: 12
- Forum: High-end Audio Forum
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Anyone using SP MPX-3 Models and LCD-2?
I know this is an OTL, but I wonder how well this combination works for you? Any particular tubes? I actually found that with a GE 5 Star 5695 and KenRad 6SN7GT Blacks, I get pretty good sound through Norse cabling. My ultimate plan is to buy a new Moth when it comes out, which...- Frihed89
- Thread
- Replies: 0
- Forum: High-end Audio Forum
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Looking for bright ideas for a 45-based, dedicated SET headphone amp to drive low impedance/insensitive cans under 100 ohms (yes to LCD-2s)
No speaker taps, output transformer coupled. How many input/gain stages? What circuits? Coupling between stages? What OPTs? Heaters- AC or DC? hum pots? Other bright ideas to keep hum down. Anything else you want to add?- Frihed89
- Thread
- Replies: 4
- Forum: DIY (Do-It-Yourself) Discussions
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Question about filament voltage for 5687 tube as output tube in an SP MPX3 Slam model
Does the 5687 take a 12.6 or 6.3V filament supply when it is used with an adapter in an Single Power MPX3 Slam model? I am trying to replace an adapter for the 5687 tube?- Frihed89
- Thread
- Replies: 4
- Forum: DIY (Do-It-Yourself) Discussions
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Anyone seen or heard about a new 2A3 Output transformer coupled amp by Eddie Current?
The single one I saw -- somewhere here -- has a separate power supply and runs with output transformers. Craig talked about showing it a meet in mid-Feb and was hoping to go commercial with it if there was enough interest. This is a new amp, not a 2A3 BA. It is not OTL.- Frihed89
- Thread
- headphone-amplifiers bottlehead-crack-otl
- Replies: 2
- Forum: Headphone Amps (full-size)
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Thinking about a 2A3-based headphone amp
So far I have only seen references to the out-of-production Moth Audio offering. I am interested in knowing if there are any 2A3 dedicated headphone amps currently in production, or if anyone knows a custom builder that is really good with the 2A3 Tube. I would like to use such an amp to drive...- Frihed89
- Thread
- audeze-lcd2-planar-magnetic-headphones audeze headphone-amplifiers
- Replies: 0
- Forum: Headphone Amps (full-size)
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Adaptor question
I have long length of a very nice IC cable that is terminated with silver male RCAs at all 4 ends. I want to first test the concept of using this wire as a headphone wire for the Audeze LCD-2 without re-terminating both ends. After that, if the sound is acceptable, I'll go for direct...- Frihed89
- Thread
- Replies: 1
- Forum: Moon Audio Premier Sponsor Forum
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What Cables for Audeze LCD-2?
I know about ALO, Whiplash and Moon. Are there other cables? The ALO cables are being well-covered on another thread. Has anyone tried and have any comments on other cables for these headphones?- Frihed89
- Thread
- audeze audeze-lcd2-planar-magnetic-headphones cables headphone-cables headphones
- Replies: 159
- Forum: Cables, Power, Tweaks, Speakers, Accessories (DBT-Free Forum)
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Headphone adapter to connect speaker outputs to 1/4" headphone jack
I have a 300B SET - 8WPC. Would it be a good/bad idea to adapt the speaker outputs (8 and 4 Ohm) on my Audio Note (UK) Meishu integrated for headphone use Audeze LDC-2? If it's a good idea would it be possible for someone to draw the circuit or direct me to a webpage?- Frihed89
- Thread
- Replies: 0
- Forum: DIY (Do-It-Yourself) Discussions
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What's inside the Eddie Current ZDT?
I have seen and heard the ZDT (at RMAF 2009), but I have not seen the inside. I don't have one. On the outside I see 1 (just one) x 12AX7 and 2 x 6C33C and two covered OPTs. It must be SS rectified, but i am more interested in guessing the input and gain stage typologies: what lies...- Frihed89
- Thread
- Replies: 2
- Forum: DIY (Do-It-Yourself) Discussions
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Can any one compare the Bottle Head Sex amp (and low impedance head phones) with the Crack OTL amp (and high impedance phones)?
And, or have you ever listened to the Bottle Head Crack amp with K701s?- Frihed89
- Thread
- desktop-amps bottlehead-crack-otl
- Replies: 1
- Forum: Headphone Amps (full-size)
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In case you were sleeping:
Has anyone seen/heard the German Audio Valve RKV MKII? Their preamps are quite nice.- Frihed89
- Thread
- Replies: 7
- Forum: High-end Audio Forum
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Hong Kong Meet right after Christmas?? Need info
Is it true that there will be a meet in Hong Kong in a few days? I am going to be in that region. I'm leaving tomorrow for Hanoi. Where can I read about it? Thanks...- Frihed89
- Thread
- Replies: 0
- Forum: Local / Regional Head-Fi Meets, Parties, Get-Togethers
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What is going on at Audeze LCD-2 phones?
Doe anyone have enough close contact with this firm to know when these phones will be available for retail sale?- Frihed89
- Thread
- Replies: 14
- Forum: High-end Audio Forum
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Typology-circuit differences in various Zana Deux models
What are the main differences in typology and circuits between the ZD, ZDT and ZD....(I forget)? I know there are obvious differences in balanced and unbalanced and the types of head phone connections. But are they all output transformer coupled? How many and what type driver stages? Feedback...- Frihed89
- Thread
- Replies: 0
- Forum: Headphone Amps (full-size)
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Vote: Buy a new ZDT or keep my Fixed MPX3 Slam SE and assorted tubes
I have fixed most, if not all, the problems with my SP amp. It sounds better than ever. Do I keep it (and numerous NOS pairs of 6SN7GTs, 5687s, etc), or buy a new ZDT, which I just heard at CanJamRMAF.- Frihed89
- Thread
- Replies: 21
- Forum: Headphone Amps (full-size)
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Can Someone briefly summarize the SP problems by model?
For many of US, it is not clear whether our SP head model is likely to have problems. Some models, like the Extreme, seem to share a common set of issue; also the electrostatic amps; and some Supras. But that still leaves, the PPX3 and MPX3. Admittedly, these came in many flavors and promised...- Frihed89
- Thread
- Replies: 5
- Forum: Headphone Amps (full-size)
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Little DOT MK III Mods??
Can some of you please summarize the successful modifications (mods) you have made to your LD MKIIIs? I am not talking about tube rolling. I am talking about things like changing/substituting/adding/removing parts, such as capacitors, resistors, transformers, wire, etc. Maybe this pic will...- Frihed89
- Thread
- little-dot-mk-iii little-dot-mk-iv headphone-amplifiers desktop-amps
- Replies: 199
- Forum: Headphone Amps (full-size)
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Audio Note Dacs, transports and wire
I haven't seen any discussion of Audio Note UK (AN) DACs, transports or ICs on this forum. I have heard several of their Dacs and transports (in shops and at shows), and i certainly have never heard anything so life-like and enjoyable. I finally broke down and bought one of their one-box players...- Frihed89
- Thread
- Replies: 23
- Forum: High-end Audio Forum
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"Review" of Audio Note CD 3.1 x/II
I posted about this on a previous thread, and promised a review. You can read about the player itself on the thread "Shameless plug for Audio Note CD player. Review comes later": http://www.head-fi.org/forums/f7/sha...-later-413385/ There are pictures there as well, but I have included the...- Frihed89
- Thread
- Replies: 3
- Forum: Dedicated Source Components
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Case screws on an SP MPX3
Does anyone know if the hexagonal case screws on the MPX3 have US-sized or metric-sized heads and threads? I used to have both kinds of Allen wrench sets, but now I can't locate them and i just have singles. I need to use something like an Umbraco screw driver to get them out again, but i don't...- Frihed89
- Thread
- Replies: 7
- Forum: DIY (Do-It-Yourself) Discussions