Graham Slee Headphone Amps - Year of manufacture

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Year of manufacture

Printed From: Graham Slee Hifi System Components
Category: Headphone Audio
Forum Name: Graham Slee Headphone Amps
Forum Description: Questions, answers and product information zone for Graham Slee Headphone Amplifiers
URL: https://www.hifisystemcomponents.com/forum/forum_posts.asp?TID=5686
Printed Date: 27 Mar 2026 at 2:11am
Software Version: Web Wiz Forums 12.01 - http://www.webwizforums.com

Topic: Year of manufacture

Posted By: pockets
Subject: Year of manufacture
Date Posted: 20 Jan 2024 at 11:01am

Hi , just wondering how old the serial number 0100-681 makes a solo headphone unit? does the LED have to be green for it to be an SRG ?

Replies:

Posted By: lfc jon
Date Posted: 20 Jan 2024 at 5:38pm

I think they are all green LEDs.

Can't tell you how old your Solo is I'm afraid. Do you like how it sounds?

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Reflex M, Solo (both with PSU-1) CuSat50, Lautus, Spatia & Spatia links cables. Ortofon Bronze.

Posted By: pockets
Date Posted: 20 Jan 2024 at 5:49pm

Hi,haven't aquired it, was just doing some research. Have found that it's most probably the 07 version so pre SRG hence the red LED and think 010 serial number makes it 2007 I believe.

Posted By: pockets
Date Posted: 25 Jan 2024 at 11:30am

Do the prefix numbers always denote the year on every type of unit for example 0150 equates as 2012?