This unit is working all functions. Controls cleaned and all broken solder cracks reflowed. There is a low level hiss in the right channel when the volume is zero. It can not be heard when volume is turned up past zero. Selling for parts for this reason.

Sumo Electra Audiophile Stereo Preamp Unit works great. Ships FEDEX, CONUS only. worldwide shipping via ebay international shipping program.

I’ve been using this preamp with my sumo power amp that I should have listed or will list soon. There is an issue with the preamp where I need to toggle the power amp on and off in order to have both channels function. Once that is done I was able to use it and it sounded great. I was using the phono input. There is cosmetic damage to the top and front face. Check the photos. I think the bypass light might not be working. I decided I needed to clear some space out and get rid of a few amps so I have sitting around. When I bought it the preamp came with brackets. Never used them and honestly not sure if they are for this preamp A friend thinks that the preamp has an issue with popping when turned on. It should be silent for the first 15 seconds but it seems it's relay is having an issue. It's also got some noise on the volume pot. The transient noises are causing the power amp's protection circuit to kill output (and it doesn't reset itself, which is why you have to cycle power to get the channel to come back on. It's cut out both channels together and independently, but for whatever reason the right side's protection circuitry seems more sensitive.

SUMO THE NINE PURE CLASS A AMPLIFIER 90 WATTS PER CHANNEL AND SUMO PREAMP. In perfect working condition. This amplifier sounds fantastic and has been used to power my Wilson Speakers. I am selling all my equipment and moving to a smaller location and just cant take it with me. I also have the SUMO tuner that goes with it not pictured in black

MADE IN USA. Wonderful preamp from Sumo. Two tape loops, 3 additional inputs, and a NON-WORKING PHONO SECTION. I used this with a Musical Fidelity phono section with great results. Very nice condition, but a few missing screws on the case. Original MSRP was $750. Original box included, but no rack handles or manual. Ships to the CONUS ONLY.

SUMO Athena single rack unit preamplifier - exemplary design good used condition

Selling my Sumo Diana preamplifier. It is basically Sumo Athena but with a separate power supply module and balanced outputs in addition to 2 sets of RCA outputs. The preamp is a discrete, dual mono design with separate power supplies for each channel. 1% metal film resistors and metalized polypropylene capacitors are used throughout. All functions work perfectly.

SUMO Athena single rack unit preamplifier - exemplary design good used condition

SUMO Athena single rack unit preamplifier - exemplary design good used condition

SUMO Athena single rack unit preamplifier - exemplary design good used condition

SUMO Athena II Stereo Preamplifier with original box Unit works great. Ships FEDEX, CONUS only. Worldwide shipping via ebay international shipping program.

SUMO Athena single rack unit preamplifier - exemplary design good used condition

This is a Sumo solid state preamp with mm/mc phono preamp and TWO tape loops. The unit functions perfectly and was my daily driver for several years. Ask any questions you like. Its a great preamp.

SUMO Athena single rack unit preamplifier - exemplary design good used condition

SUMO Athena single rack unit preamplifier - exemplary design good used condition

Complete set of Sumo audio components in excellent condition. Everything is tested and working perfectly. Amplifier was recently serviced by one of our technicians. Feel free to ask any questions you may have! Important Note on Shipping: eBay estimates of shipping costs are not accurate and do not include insurance or adult signature requirement. Please contact us for a more accurate quote. No shipping to Vietnam, China or Hong Kong. Please do not submit payment until you have received an invoice from us with accurate shipping costs. We reserve the right to hold the item or cancel the transaction if actual shipping costs are not paid.

%????% EBay Seller! **STORAGE find** Hooked up and tested sounds great! May entertain OFFERS also! The Sumo Athena Preamplifier is a great option for those who are looking for a high-quality device that can amplify sound and improve your audio experience. With its sleek black color and elegant design, it's sure to fit in with any home audio setup. This preamplifier delivers incredible sound quality and has two channels to ensure that sound is evenly distributed. The Sumo Athena Preamplifier is also great for those who are looking for an easy-to-use device that doesn't require any complicated set-up. $35 S/H US Only Please!

SUMO Athena single rack unit preamplifier - exemplary design good used condition

SUMO Athena single rack unit preamplifier - exemplary design good used condition

SUMO Athena single rack unit preamplifier - exemplary design good used condition

SUMO Athena single rack unit preamplifier - exemplary design good used condition

SUMO Athena II Stereo Preamplifier with original box Unit works great. Ships FEDEX, CONUS only. Worldwide shipping via ebay international shipping program.

SUMO Athena single rack unit preamplifier - exemplary design good used condition

SUMO Athena single rack unit preamplifier - exemplary design good used condition