BTW, please PM me with questions to keep this sales thread simple. I urge that those with potential interest read the WARNING stickies posted under 'Full Size Headphone Amps'.
$GONE. Sold. No longer available.
This is an IC for a 'fixed' stock Extreme. Stock production model RevA 2007, no options whatsoever from SinglePower, which is a virtue. This has been well upgraded in a high quality, professional by a local professional tech certified in electronics repair, with a specialty in digital systems and DJ/recording equipment.
The exterior looks like a stock Extreme. Pictures are here:
Imageshack - topgf.jpg - Uploaded by nurxhunter
http://img710.imageshack.us/img710/1346/rearfn.jpg
http://img710.imageshack.us/img710/8011/fronttxl.jpg
Here is an inside picture I took.
http://img85.imageshack.us/img85/6204/agoninside2.jpg
Summary of this Extreme:
1) Stock RevA 2007 board. It looks very nice, to my eye. The soldering is excellent, to my eye and the opinion of the tech. There appear no variances requiring attention.
2) A second dedicated transformer has been installed for plates voltage supply at 160V. This corrects the known transformer deficiency. The original 8A transformer for heaters was properly wired, and a Hammond Torrid implemented within the case for plate voltage at 160V. The heaters now see 6.1V. Form factor unchanged. So--this amp comes equipped with dedicated transformers for plate and heater supplies, respectively. This is a significant upgrade done by a professional certified tech.
>>Here is a pic of the internal second transformer, and also depicting proper wiring of 'primary' heater PS transformer:
http://img40.imageshack.us/img40/727...ransformer.jpg
3) R54 resistors bypassed--but--left in place. This brings heater voltage to 6.1V (up from 5.7V). Sounds substantially more open minus R54 resistors, in my opinion. Not shown in picture--because this was just done.
4) The filament transformer housing and entire case pass the 'pinky test' (one can keep one's pinky in place without suffering and the internal secondary transformer is cool and totally quiet, by virtue of its toroidal construction. All good.
5) Installed with an in-rush current limiter to allow a slower warm up so voltage/current do not slam the plates and heaters, respectively. Not shown in picture because this was just done.
6) Sounds spectacular, in my opinion, to my very picky tubophile ears.
It will come with a matched pair of excellent-testing RCA 6AS7G and an excellent-testing GE 6SN7GTB--and an ECC1 adapter. I can sell other 6SN7 if you need them, for extra. I can sell other top-of-the-line 6080, 5988 as well, but only with the amp. to serious inquiries by PM for a possible sale It will come with a generic power cord. The case and transformer become reasonably warm with use, but not hot so as to be of concern. I have left it on for an entire weekend many times with no issue.
Certified by a pro electronically and by me, somically. Looks good (7/10 for sure on agon scale--to be conservative). Satisfaction guaranteed to members with good feedback.
GONE. If you ever were thinking about getting a great SP amp., the stock extreme upgraded with a proper dual transformer by a certified technician and properly tweaked to bring out its best--THIS IS the one to get--ESPECIALLY AT THIS GREAT PRICE.
The tech who did the work is:
Welcome to Pro Digital Inc. - DAT Recorder Service Specialists
West Park Road
Havertown, PA 19083
(610) 353-2400
The amp is sold to a lucky member.
$GONE. Sold. No longer available.
This is an IC for a 'fixed' stock Extreme. Stock production model RevA 2007, no options whatsoever from SinglePower, which is a virtue. This has been well upgraded in a high quality, professional by a local professional tech certified in electronics repair, with a specialty in digital systems and DJ/recording equipment.
The exterior looks like a stock Extreme. Pictures are here:
Imageshack - topgf.jpg - Uploaded by nurxhunter
http://img710.imageshack.us/img710/1346/rearfn.jpg
http://img710.imageshack.us/img710/8011/fronttxl.jpg
Here is an inside picture I took.
http://img85.imageshack.us/img85/6204/agoninside2.jpg
Summary of this Extreme:
1) Stock RevA 2007 board. It looks very nice, to my eye. The soldering is excellent, to my eye and the opinion of the tech. There appear no variances requiring attention.
2) A second dedicated transformer has been installed for plates voltage supply at 160V. This corrects the known transformer deficiency. The original 8A transformer for heaters was properly wired, and a Hammond Torrid implemented within the case for plate voltage at 160V. The heaters now see 6.1V. Form factor unchanged. So--this amp comes equipped with dedicated transformers for plate and heater supplies, respectively. This is a significant upgrade done by a professional certified tech.
>>Here is a pic of the internal second transformer, and also depicting proper wiring of 'primary' heater PS transformer:
http://img40.imageshack.us/img40/727...ransformer.jpg
3) R54 resistors bypassed--but--left in place. This brings heater voltage to 6.1V (up from 5.7V). Sounds substantially more open minus R54 resistors, in my opinion. Not shown in picture--because this was just done.
4) The filament transformer housing and entire case pass the 'pinky test' (one can keep one's pinky in place without suffering and the internal secondary transformer is cool and totally quiet, by virtue of its toroidal construction. All good.
5) Installed with an in-rush current limiter to allow a slower warm up so voltage/current do not slam the plates and heaters, respectively. Not shown in picture because this was just done.
6) Sounds spectacular, in my opinion, to my very picky tubophile ears.
It will come with a matched pair of excellent-testing RCA 6AS7G and an excellent-testing GE 6SN7GTB--and an ECC1 adapter. I can sell other 6SN7 if you need them, for extra. I can sell other top-of-the-line 6080, 5988 as well, but only with the amp. to serious inquiries by PM for a possible sale It will come with a generic power cord. The case and transformer become reasonably warm with use, but not hot so as to be of concern. I have left it on for an entire weekend many times with no issue.
Certified by a pro electronically and by me, somically. Looks good (7/10 for sure on agon scale--to be conservative). Satisfaction guaranteed to members with good feedback.
GONE. If you ever were thinking about getting a great SP amp., the stock extreme upgraded with a proper dual transformer by a certified technician and properly tweaked to bring out its best--THIS IS the one to get--ESPECIALLY AT THIS GREAT PRICE.
The tech who did the work is:
Welcome to Pro Digital Inc. - DAT Recorder Service Specialists
West Park Road
Havertown, PA 19083
(610) 353-2400
The amp is sold to a lucky member.
