Amta-Sphere

Atma-Sphere music systems, inc. is a small company in Saint Paul, MN that has been making world-class vacuum tube music amplifiers since 1976. We are known for our unique approach to circuit design, resulting in multiple patents and the creation of the first, truly reliable Output TransformerLess (OTL) amplifiers.

Atma-Sphere S-30 Mk III.1

Atma-Sphere S-30 MK III.1 Stereo OTL Amplifier – $3,990. Good OTL amps are just expensive to make… complexity from the power supply to the number of tubes requires drives up cost, but Ralph Karsten at Atma-Sphere has put together a great sounding hand-wired 30W/Ch OTL that cut no corners in a category where such (OTL) amps cost much more.The fully balanced, very stable & reliable design delivers the purity of tube tone that no other type of amplifier can. Click here to view manufacturer web page for the S-30 MKIII.1.

Optional Features:

Power Supply Boost option: $400
V-Cap Teflon® coupling caps: $500
V-Cap Copper Foil Teflon® coupling caps: $600
Caddock® resistor package: $1270

Amplifier

Signature Sound High-End Audio added 4 new photos.

4 days ago

This used Grado Statement series Statement V2 phono cartridge is in very good - Excellent condition - spent its time mounted/played on a Rega RP10 turntable and has approximately 300 hours of use. This cartridge comes with its factory box and instruction sheet. This is a dynamic sounding cartridge with a muscular bottom end. Retail new this is a $3,500 phono cartridge, this used Grado Statement 2 phono cartridge is yours for $1,750 plus shipping. Reasonable offers will be considered.

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Signature Sound High-End Audio added 4 new photos.

4 days ago

We just got in this used Music Hall MMF7.3 turntable which is a little more than a year old. This is the version packaged with factory mounted Ortofon 2M Bronze MM phono cartridge. The original owner put no more than 200 hours on this table/cartridge which is in VG-Excellent condition before he traded this table in (traded up to a Rega RP8). The table is compete with all accessories (footers, CW, clamp, A/S weight,etc), manual, and factory packaging. This turntable/cartridge combo retails for $1,595 new, you can get this very nice turnkey table/cartridge combo for only $845 plus shipping.

Feel free to call, message, or e-mail with any questions or your request to purchase.

NOTE: IF NOT OBVIOUS, THIS AD IS ONLY FOR THE MMF7.3 TURNTABLE W/CARTRIDGE SHOWN IN THE PICTURES. THE BASE/PLATFORM I PUT THE TABLE ON TO TAKE THE PICTURES IS NOT INCLUDED! 🙂 ... See MoreSee Less

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Signature Sound High-End Audio added 4 new photos.

4 days ago

This Cardas Clear beyond power cord is a one owner trade-in (we sold this card new to this customer - it is 5 years old and has the Furutech plugs/IEC that Cardas used on these cords at that time) and in very-good to excellent condition. Cosmetically it has some typical scuff marks on the heat shrink (see pics). Retail new this is a $1,045 power cord, this used Clear Beyond cord is yours for $575 plus shipping. Comes with factory paperwork/card as shown in the pictures.

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Signature Sound High-End Audio added 7 new photos — at Signature Sound High-End Audio.

4 weeks ago

My apologies for not posting much in recent weeks - its not that things have been quiet here, but we have been rather busy with various service, upgrade, and retail work! So, I finally got something nice for you to check out!

This is freshly reconditions/repaired Joule LAP-150 all tube preamp. It started off life as a LA-100MKII approximately 20 years ago and was upgraded by Joule-Electra to the Russian tube based LA-150 line stage in late 2002.It has built in its original Joule OPS-1 MM/MC tube phono preamp next to the line stage in the main chassis and the bulk of the power supply is in the external cage like chassis. To make sure this preamp was good to go for many more years, we replaced a most of the power supply filter capacitors, repaired a flaky/bad circuit board trace, and replaced 8 of the 13 tubes with new and NOS tubes. Then all functions of this preamp were thoroughly checked to be sure the preamp and phono stage are working properly. When new, this was about a $5,000 preamp and the LA-150 line stage upgrade was about $1,000. Our asking price for this wonderful price which is complete with remote, box, a couple spare tubes, and manual is $2,250 plus shipping.

These are wonderful full function preamps that have a smooth, musical character/tone, wonderful soundstaging and a pretty sweet all tube phono preamp. You will not be able to find this combination of features in a new tube preamp at anywhere near this price.

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DON'T EVEN HESITATE TO DO BUSINESS WITH SIG SOUND RICH IS TOP SHELF AND WHEN HE TELLS YOU SOMETHING YOU CAN BELIEVE HIM HE IS INTELLIGENT AND HAS A GREAT SET OF EARS TO GO WITH THAT INTELLIGENCE ... A NO BS GUY FROM TOP TO BOTTOM ...I HAVE PURCHASED TWO PAIR OF MERLIN FROM HIM THE VSM AND TSM AND THIS HAS BEEN AN AUDIO LIFE CHANGING EXPERIENCE THERE WILL BE MORE BUSINESS DOWN THE ROAD FOR SURE

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