Sold: [Sold!] JM Audio Opus X Summit Prototype
Listing ID: 56199 Views: 2500
650.00 USD
Condition
Excellent/Like new
Negotiability
Or best offer
Ships to
  1. Anywhere
  2. United States of America
For sale: super limited production of the JM Audio Opus Summit series. This is tuned Warm but Detailed in Open Back form. These are the BioWool 32ohm drivers.

This has the fully removable metal grill which is a completely unique design and, honestly, it's still one of the most gorgeous headphones I've seen.

Has an upgraded headband. includes the fuzzy pads, leather pads, carrying case, two sets of cables that terminate to 3.5mm (with the 1/4" adapter).

Edit: Price includes shipping and all extras. Forgot to mention that. Willing to ship outside of US but at some additional cost if the shipping cost ends up being higher.

These headphones are amazing honestly but I'm looking to switch my gear up a bit and going a more closed back route. You'll probably never see another set from John like these!

Edit: added additional photos.
Listed by: SemperMalum (1)
Listed: 2023-10-18
Last edited: 2023-11-09
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saMWyz

saMWyz

New Head-Fier
Do you by chance know how this compares to the XTC Open or Closed?
 
SemperMalum

SemperMalum

100+ Head-Fier
saMWyz said:
Do you by chance know how this compares to the XTC Open or Closed?
Click to expand...

For all intents and purposes, I believe they use the same driver as the XTC line up just with a limited run look. In my correspondence with John about them, that's what he indicated.

Should be in the same vein as an XTC Open BioWool just without the other headband and without the wood. Like a precursor to the XTC line up from my understanding.
 
Zhon

Zhon

Head-Fier
Tried these at Canjam. They sound incredible and compare well to the XTC Opens I have, which in turn compare well to Utopias, Final D8000s etc.
 
SemperMalum

SemperMalum

100+ Head-Fier
Zhon said:
Tried these at Canjam. They sound incredible and compare well to the XTC Opens I have, which in turn compare well to Utopias, Final D8000s etc.
Click to expand...

Yessir! Just a different look honestly. And I'm sure John would be willing to retune based on the person buying them.
 
unfitstew

unfitstew

100+ Head-Fier
Is warm but detailed v shaped or just a headphone with some extra bass and still has a regular amount of treble?
 
SemperMalum

SemperMalum

100+ Head-Fier
unfitstew said:
Is warm but detailed v shaped or just a headphone with some extra bass and still has a regular amount of treble?
Click to expand...

My take is that it's definitely a bump to the bass/extra bass and still has a great amount of treble and mids. I don't think it's full V-shaped (probably more U?)

There's another warm level that JM can do for tuning that's probably more V-shaped.

From JM's website, an example :

Scalpel Tuning
Flat Bass Scalpel
Near Scalpel (Slightly Warm with Extended Detail)
Warm Yet Detailed
Warm Warm For Tinnitus/High Frequency Sensitive
Click to expand...

The nice thing about @John Massaria too is he can re-tune it so if anyone picks this up and find that the tuning is just slightly too warm (or more than slightly), you can send it to him and he'll re-tune (free of charge to do so based on my understanding). He's super responsive as well so you can work with him on getting it exactly as you want it.
 
unfitstew

unfitstew

100+ Head-Fier
SemperMalum said:
My take is that it's definitely a bump to the bass/extra bass and still has a great amount of treble and mids. I don't think it's full V-shaped (probably more U?)

There's another warm level that JM can do for tuning that's probably more V-shaped.

From JM's website, an example :



The nice thing about @John Massaria too is he can re-tune it so if anyone picks this up and find that the tuning is just slightly too warm (or more than slightly), you can send it to him and he'll re-tune (free of charge to do so based on my understanding). He's super responsive as well so you can work with him on getting it exactly as you want it.
Click to expand...
Okay good. I can deal with U shaped usually but V shaped usually has too little mids for my preference.

John Massario has some pretty nice designs.
 
SemperMalum

SemperMalum

100+ Head-Fier
unfitstew said:
Okay good. I can deal with U shaped usually but V shaped usually has too little mids for my preference.

John Massario has some pretty nice designs.
Click to expand...

Amazing designs, honestly. I'm sad that this look isn't in his regular line up but the XTC designs are all phenomenal. When I was at Socal CanJam, I'd had a few people ask me what they were and actually had a few people listen to them there.
 
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