OP - you already know this - but for other readers proper (not 12V DC supplied) valve amps contain high, potentially lethal voltages that can persist for long periods after the amp is switched off. I don't know (but assume) Hi Fi tubes are biased colder to reduce distortion (so 60%).įor those reading this with an interest in adjusting bias, Uncle Doug's 2 part Youtube tutorial is very good. Bias mid point for a guitar amp is 70% of maximum dissipation with a range of 60% - 80%. I couldn't find a schematic online so you need to work out if the bias is set via the grid or cathode. The specified output tubes are E元4 which have a maximum plate dissipation of 25W. It looks very nice, but the sheet metal and tube cage metal is pretty thin/flimsy compared to McIntosh. You can pick up nice pieces affordably these days if you are into nostalgia. The irony is that many audiophiles have criticized the Sonic Frontiers offerings as 'too solid state-like '. aschen said: Sonic frontiers stuff always looked so nice and was semi reasonably priced compared to its competition. ' There is a growing recognition by todays sophisticated. 'I am please but not surprised to see that the legacy SFS-80 is a superior performing amplifier in its class. Alongwith the SFS-80, the SFS-40 is part of the first non-kit Sonic Frontiers lineup and is centered around two E元4. FOR SALE: SONIC FRONTIERS SFS-80 Power Amp & SFL-1 Preamp: Tube Amplifiers: USD 2195.00: NC : Jun 19, 2023: Products Add a New Sonic Frontiers Product. I would get the cover off and bias it with a proper volt meter. The transition from parts supplier to manufacturer happened in the 1987, first as kits (SFM-75) then as factory built - with much success ahead. It looks like you are using the meter on the front of the amp to measure voltage or current. regards from Gerhard Wartha Sansui user with SANSUI tube amp website. The room is big and it can get very noisy. I play at about 90% so about 36 instead of the recommended 40. Payment method: Cash, Paypal, Interac/EMT: Condition: 7 - Good () Date Posted: Sep 17, 23 5:36pm (PST) Edited: Sep 17, 23 5:40pm Updated About Seller: Follow user. Info: Sonic Frontiers SFS 50 Asking Price: CAD 1300.00. You can easily change the bias here as well and thus use the end tubes even more. FOR SALE: Sonic Frontiers SFS 50 Watch Report This Ad. The SFS-50 from Sonic Frontiers has a beautiful metal-on-metal aesthetic, and with 50-watts of Class A tube power it has the oomph to. The bass goes in the direction of medium home guitar amplifiers, the middle and highs are solid hi-fi. Sonic Frontiers SFS-50 Tube Power Amp Reviewed. There are many bass sequences that the SFS 40 plays very loudly and impressively despite the up to the 16 ohms. Sonic Frontiers SFS-80 tube power amplifier Canuck Audio Mart CA1,800 13 May 8, 2022. Try to have it fixed locally but without success. The Line 1 was great but the SFS-80 was not reliable. I sold them to buy a Bryston kit (BP25 and 2B SST). I had a Line 1 and a SFS-50 for about 2 years. The SFS 40 plays quickly, openly and with clearly distinguishable, sharply separated instrument notes. Sonic Frontiers has been out of business for 20 year at least. Sonic Frontiers SFS-50 PRIVATE amplifier pdf manual download. Item 650022380 Info: Sonic Frontiers SFS 50 Reply to Ad Give Feedback on This Seller Share Description Sponsored post - log in to remove this ad. Very open and differentiated, I played Beatles seperated tracks. View and Download Sonic Frontiers SFS-50 PRIVATE operating manual online. A beautiful device that looks very stable from the outside at 17 kg. Would prefer Local sale, Cash or Zelle only. Can run KT-88 or 6550 (Inculded) tubes - all tubes and manual are included. This amplifier has just been fully restored to factory specs this year, virtually a new amp. ConneX SFS/SFM Tube Cage Female Receptacle. Selling one Sonic Frontiers SFS-50 Stereo Amplifier in both excellent working and cosmetic condition. Sonic Frontiers Power-2 Toroidal Power Transformer. The bias can be changed easily and quickly. Power output: 50 watts per channel (stereo) Frequency response: 6Hz to 60kHz. In Stock 6-32 3/8' Undercut Counter Sunk Phillips 18-8, Stainless, Black Oxide Note: Used for the Top Cover of Anthem PVA MCAA P Series Amps. 6CA7, according to the description one could even use 6556 or 6L6GC. I've just tried this main amp, I used the SANSUI CA 303 from 1967 as a preamplifier, 4 Infinity Kappa 8 in series as speakers, so 4 speaker with a total 16 ohms per channel. Reviewed Mar 21st, 2022 by gerhard wartha
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