SAS Audio LabsTM
Over 48 years experience with Tubes
World's Most Natural Sounding, Accurate Preamplifier:
Low Gain, High Gain Conversion Selectable:
Where Music Comes Alive TM
Bernie (spab), 11A. "I have also tested the 11A in terms of comparing the sound from my excellent cd source directly to amps versus inserting the 11A pre between. I could detect no difference whatsoever.... So, my two cents: the SAS preamps are stellar – with my 11A I hear no compression or any other alteration of the originating signal."
Bob: "Hey guys. . .if anyone's interested, I'm selling my Tram 2 preamp since my SAS B11A is so awesome...." (Tram 2 uses 45, 2A3s)
Terence: "I have been using the 11A since I received it but I didn't want to be premature in my assassment, although my initial assessments were favourable. Now, I must say that the 11A is certainly the best preamp I have ever owned, and the best I have ever heard-ss or tube. Thank you for a wonderful product, Steve."
gjm: "The B11a was compared to a Coincident Line Stage (custom built at significant cost), an Audio Analogue Bellini, a Modwright LS36.5, and a Shindo Aurieges. I'd not swap the B11a for any of the others. Shindo kit is something I have always loved listening to. Still do. But the B11a really did show the Aurieges how it's done; even the local retailer commented, in a voice loaded with astonishment, "good grief, that's fast!" The Aurieges really did sound lovely in isolation, but I certainly prefer the B11a.... We also agreed that the B11a was much clearer, making the Shindo Aurieges sound slow, muddy, and coloured."
Ray: "your prees are somewhat legendary in there reviews."
Welcome to SAS Audio Labs. SAS Audio Labs is a small speciality manufacturer who caters to those who wish the finest, most accurate, most natural musical reproduction in the world. Steve Sammet, an Electronics Engineer, has decades of experience.
I think we all know what perfection means. It means natural sounding, not "sterile", "harsh", "thin", yet not syrupy, or bloated. The 11A reproduces the natural, flesh tones, instruments with correct harmonics to perfection, that we all crave. It took 3 1/2 plus years of proprietary listening tests before the 11A could be marketed as perfection. You can trust the 11A as the reference standard, and concentrate on any minor weaknesses of your other component(s) in your system.
I only offer two models because of the superior quality. I design and manufacture, to order, for those with the most discriminating tastes.
The 11A does not need a power conditioner thanks to the 5 stage, properly designed power supply. The 11A eliminates RF and EMI problems without the hassle of batteries, with their charging cycles, changing internal resistance with discharge, battery degradation, and with materials in the signal path such as lead or nickel-cadmium. Check out the 11A power supply noise at just the second stage of filtering. Scope is set to 5 millivolts (5 thousands of one volt/div).
Notice at just the second filter stage, virtually no RFI or EMI is present. And my shop is near manufacturing and 5 miles from a 2 million plus watt high powered TV station antenna.
For sonic consistency, critical parts are within 0,5% tolerance.
No solid state regulation or solid state CCS etc.
Tube dampers, and chassis resonance control incorporated. Internal damping eliminates the need for special feet.
The output impedance of the 11A with 100pf load is approximately -1.0db at 400khz. So much for needing buffers, mu circuits, or cathode followers. (The main frequency response loss is the volume control/tube input capacitance.)
I redesigned the 11A for Genelex tubes, because of their very lower noise floor. Tube rolling is permissible because of room acoustic variations and component weaknesses, as long as the filament current is .365 amps or less.
The 11A comes in two configurations, with options.
Take advantage of our 30 day money back guarantee, 7 year warranty. You have nothing to lose and everything go gain. (Check out our Specials page for once in a while deals.)
Please feel free to contact Steve at firstname.lastname@example.org with any questions or comments.
Frequency Response: 0,6hz - 110khz minimum -1db (100pf, 100k load, vol control mid resistance), Gain: 11db or 20db Total Harmonic Distortion at 2 vrms: 0.03% high gain (Genelax E88CC) Channel Separation at 10khz: 90db typical Signal Polarity: Inverts Input Impedance: 25k ohms (50k optional) Output Impedance: 1.9K ohms Min. Amplifier Input Impedance: 15k ohms Volume Controls: 2 Tape Loops, HT bypass: Optional Line Inputs: 3 (5, Standard version) Preamp. Outputs: 2 Tube Regulation: Yes Line Cord Length: 6 feet standard cryod Jenalabs "Basic" Power Consumption: 27 watts Power Requirements: 120 Volts AC, 50/60hz Dimensions: 19" front 4" high (with stock feet) 14 1/4" deep (counting knobs and jacks) Actual Weight: 17 lbs. Factory Direct Price B11A: $2949.00 Factory Direct Price Standard 11A: $3149.00 Factory Direct Price 1 meter "V" IC: $140.00Shipping included within the Continental USA. Outside USA, check on shipping charges.
30 day money back guarantee. Payment can be made from a Paypal account, a credit card through Paypal (do Not need a paypal account, use email@example.com for email address ), a Cashiers Check, Post Office Draft, Money Order (US dollars), or Personal Check (allow time for all checks to clear) payable to SAS Audio Labs. Normal shipping is FedEx ground unless specified differently. For second day or overnight shipping, please contact me. Guarantee/Warranty
For purchase the Basic 11A Line Preamplifier, 3 inputs and 2 outputs.
To purchase the Standard 11A Line Preamplifier, 5 inputs and 2 outputs.