GSP amps and JHA 13 Pros
Printed From: Graham Slee Hifi System Components
Category: Headphone Audio
Forum Name: Portable Headphone User
Forum Description: Technical Q&A, hints and tips
URL: https://www.hifisystemcomponents.com/forum/forum_posts.asp?TID=608
Printed Date: 27 Mar 2026 at 2:11am
Software Version: Web Wiz Forums 12.01 - http://www.webwizforums.com
Topic: GSP amps and JHA 13 Pros
Posted By: Sceptre
Subject: GSP amps and JHA 13 Pros
Date Posted: 07 Sep 2009 at 2:54am
I have the privilege of owning the new 6 way IEMs from JH Audio and spend most of there time connected to the super quiet Voyager.
Is there anything that can be done to ensure the hiss free operation of the Solo SRG that I enjoy from the Voyager?
Specs from website
119dB@1mW sensitivity
28 ohm impedance
Regards
Sceptre
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Mac-Apogee Duet- Solo SRG PSU1
240GB iMod - ALO PV-Cap -Voyager, D10, LISA III
Cyrus DVD 7+Q
JH|13 Pro,D7000, Ed 9, RS-1, HD600 (APS v3), ATH ESW10, Pro750, HFI 780, IE8, SA6 HD25-11, e4c.
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Replies:
Posted By: mrarroyo
Date Posted: 07 Sep 2009 at 5:33pm
So you are saying that your Voyager with the JHA 13 Pros is quieter that when you use the Solo SRG with the JHA 13 Pros? If yes there is a thread where Graham discusses the ground not being perfect due to a locking washer not cutting through the anodized case. If that is the case he suggested scrapping through the anodizing to allow contact to occur and thus reduce noise. It would be a very easy and cheap repair, other wise send Graham an email in a couple of days (he is out of the office for a bit).
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Miguel
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Posted By: Sceptre
Date Posted: 07 Sep 2009 at 5:44pm
Hi Miguel.
Yes I am saying the Voyager is quieter. I shall play with earthing options but I do not detect any 50 Hz issues. In fact, my older Solo 2007 is much quieter in the same setup. Just wanted to know if there is something I could do to reduce hiss on these IEMs.
I shall wait patiently.
Sceptre
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Mac-Apogee Duet- Solo SRG PSU1
240GB iMod - ALO PV-Cap -Voyager, D10, LISA III
Cyrus DVD 7+Q
JH|13 Pro,D7000, Ed 9, RS-1, HD600 (APS v3), ATH ESW10, Pro750, HFI 780, IE8, SA6 HD25-11, e4c.
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