iBasso SR1 semi open Headphone. Limited production.
Oct 14, 2018 at 5:44 PM Post #31 of 1,047
Really a unique sound. As semi-opens, they do what the Nighthawk / owl failed miserably to do. Have a dense full sounding middle, with great sub bass extension and treble detail. Yet without boominess and no harshness anywhere. I had my trusty portable pair, the Sony MDR-1A with Meze 99 pads which reduce the mid bass bloom, increase the lowest sub bass and open up the sound stage and give your ears more space. I like the W response these have, with not only extended but smooth highs, and some of the best sub bass ever but not lacking in mids, plus having a 3D sound stage (I'm talking about the Sony MDR-1A with Meze 99 pads). That said these sounded better in every way. Spaciousness was for my ears, about equal. Sub bass as good, if a bit more controlled (amazing for a semi-open) and the highs were as detailed, yet even smoother. Mids were fuller overall, it was more engaging to me. Despite this fullness, the spacious sound meant everything was properly spread out, and panned. A very wide, yet correct and natural sound, I'll rarely hear both in one. If they build that sound tech into a set with less fancy design, less heavy parts, and better reach for the ear cups, they'd have a winner. 1 or 2 extra clicks in length on each cup would have made them a perfect fit all the way extended. A simple yet comfy and effective band that reaches far enough as the Sony MDR-1A has can work. Pads like the Meze 99 (oval vs. round) would give them that reach and comfort. Cost cutting on visuals with the simpler band design could make them lighter, and less expensive. If that happened there'd not be a single headphone out there that can compete with something like that in its price bracket. Still hard to compare them to anything, as they've broken such new ground here.

Sounds about right. The Utopia reminds me a lot of a modern open-back take of the old closed-back DT 48/480’s. They have similar sound characteristics, just the old Beyers incomplete and old design doesn’t take proper advantage of the driver; thus they need some modding.

These headphones are interesting. Would love to listen to them. May just grab a pair.
 
Last edited:
Oct 14, 2018 at 10:07 PM Post #32 of 1,047
The rings on the SR1 are machined anodized aluminum. The 4 side supports are a special acoustical plastic to dampen any resonance. Everything is extremely solid and constructed for sound.

Hi Paul,

Great design & materials choice, looking forward to having these on hand, look forward to giving you feeback when I get them too.

Hope you have a great day !
 
Oct 15, 2018 at 10:40 AM Post #35 of 1,047
I am still curious about the

1/ world first Silicone suspension system. Isn’t it widely used in Nighthawk and or fostex Th-900 ? Unless we are talking about the very huge suspension that move easily like Utopia design here ?

2/ Tesla Magnetic Flux design ? What T unit is it ? 1.5Tesla like Fostex TH-900 ? Or is it anywhere from 1.0T to below 1.4T like Massdrop TH-X00 ? I am very confused about this technology

3/ Driver diaphragms unit look like 45mm in diameter ? Or what is the exact dimensions ?

We need more information @Paul - iBasso
 
Last edited:
Oct 15, 2018 at 4:18 PM Post #40 of 1,047
Any of you that had the chance to hear it, has an AFC for comparison? I am doubting to pull the trigger or not...
 
Oct 15, 2018 at 4:24 PM Post #42 of 1,047
I was looking to use it with my AMP8. Will there be a 4.4mm cable made available?

Don't these use MMCX? Then you can literally buy any cable that looks good to you in a 4.4 termination
 
Oct 15, 2018 at 4:26 PM Post #43 of 1,047
The SR1 might be matched pretty well with ibasso products especially DX200TI/DX200 with amp8 and amp4s IMO (and hope it is doing better with modded amps!). :L3000:
Thanks for the answer but I meant a comparison with the Aeon Flow Closed (AFC) from MrSpeakers that I own,
 
Oct 15, 2018 at 4:34 PM Post #44 of 1,047
Thanks for the answer but I meant a comparison with the Aeon Flow Closed (AFC) from MrSpeakers that I own,

I don’t own the Mr. Speakers AFC so I am not sure I can give you a right answer but one thing for sure I will listen the SR1 with my DX200TI (3.5 SE connection) and let you know their SQ. I hope I wish I can have cables with balanced 4.4mm to use with the amp8 and amp4s. Oh boy, my wallet is crying! :weary:
 
Oct 15, 2018 at 4:57 PM Post #45 of 1,047
I don’t own the Mr. Speakers AFC so I am not sure I can give you a right answer but one thing for sure I will listen the SR1 with my DX200TI (3.5 SE connection) and let you know their SQ. I hope I wish I can have cables with balanced 4.4mm to use with the amp8 and amp4s. Oh boy, my wallet is crying! :weary:
Quality cables with that termination in MMCX are only like $20 lol
 

Users who are viewing this thread

Back
Top