SJS Aoide headphone amplifier
The first prototype SJS Aoide headphone amplifier is assembled and undergoing final testing.
https://dl.dropboxusercontent.com/u/...hone_amp_7.jpg
It is effectively a mW level integrated SET amplifier using triode strapped E55L valves, with custom designed and made HiB Double C core output transformers. These have secondaries which enable switching for low impedance (30 to 100 ohms) or high impedance (120 to 600 ohms) headphones, and either balanced or unbalanced connection. The PSU is valve rectified with choke input filter and second stage LC filters per channel. There are 3 line level inputs, input selector and volume control.
It came about as a result of a commission from a long time Model 1 preamp owner who has switched over to using Audeze headphones. It was designed to be an integrated amp, but a "power amp" version could be made for use with an existing preamp.
It's a prototype at the moment, and I need to sort out the switching arrangement and possibly get different wooden frames, but otherwise it's up and running quite nicely.
Almost forgot, it can also be built as a line stage pre-amplifier by changing the output transformers. I have this version built in another box which greengoblin heard recently when he visited.
The design was developed to match the phono stages built a few years ago
https://dl.dropboxusercontent.com/u/...-overcase1.jpg
Any AoS members in South Manchester who are big headphone users and interested in hearing the prototype, please contact me
20th anniversary 20% discount offer
To celebrate 20 years since the first sjs arcadia Model 1 preamplifiers were delivered, we are pleased to announce a special 20th anniversary 20% discount on confirmed orders for any new sjs arcadia valve amplifier
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This offer includes all current designs: Model 3 riaa, Model 5 se 300B, Model 6 riaa, Model 7 line, Model 8 se 300B amp, Aoide headphone amp
North West Audio Show 2017
We are delighted to announce that we will again be exhibiting at the 4th edition of the NWAS which will take place in Cranage Hall and will run over 2 days.
We will be showing the SJS Arcadia amplifiers, Model 3 riaa, Model 5 SE 300B and Model 7 preamplifier complete with Living Voice loudspeakers and valves, with Kondo cables.
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THE SHOW
NWAS is set to become one of the highlights in the audiophile calendar. With great exhibitors, top brands and a superb venue, we believe that the North West Audio Show gives attendees the opportunity to hear the very best audio in surroundings that are second to none.
IT'S FREE
Free entry, free parking, a day surrounded by the best in audio and all in the beautiful setting of Cranage Hall, Cheshire. Book your free entry ticket(s) and enjoy a great audio festival at Cranage Hall in 2017 with best HiFi, live music, Audio Talks and more. Register and secure your free tickets today.
SJS Model 9 SUTs with Hashimoto HM-7
Newly completed and ready for delivery, three SJS Model 9 SUTs
- Hashimoto HM-7 transformers
- pure silver wire with ptfe insulation
- Dual primaries can be switched for high/low impedance carts
- Ground connection on the primary can be isolated for floating the MC coils
- MuMetal lined aluminium casework
- WBT NexGen sockets and WBT silver loaded solder
https://dl.dropboxusercontent.com/s/...9%20SUTs_3.jpg
https://dl.dropboxusercontent.com/s/...9%20SUTs_4.jpg
SJS Arcadia 18w PSE 300B amp
Just collected this original SJS Arcadia 18w power amplifier. It is in for a service and thorough check over before it goes up for sale
PSE 300B with dual-mono external psu
https://dl.dropboxusercontent.com/s/...cadia18w_1.jpg