Offered for sale; 

Used UMI (United Musical Instruments) Buzz Tone & Volume Expander guitar effects pedal. This pedal is in very good condition, fully functional, without issue. 

This early pedal, produced in the late ‘60s-early ‘70s, is somewhat rare and uncommon. UMI or United Musical Instruments of Farmingdale, NY, built this pedal like a tank with a simple circuit featuring 2 germanium transistors. It is extremely unique, and really sounds unlike any other fuzz produced at the time. 

The first transistor stage and volume control are part of the "volume expander" part of the circuit and cannot be bypassed, it is essentially a volume boost. Once the pedal is engaged the contour controls the tone, and the buzz controls the amount of fuzz. 

It’s got a battery fuel gauge. Deliciously fuzzy & buzzy!  

If you are any early pedal aficionado and don’t own one of these, here’s your chance! 

 *Please note: we do our best giving descriptions of used pieces. We have found it impossible to describe every mark on an instrument or amp that is not in the "mint" category. Also, what's important to you may not be important to someone else. For example, you may say, "I don't care what it looks like as long as it plays or sounds well." Another person may say, "Body cosmetics are very important to me so tell me about every scratch, nick and blemish." So, please ask the questions that are most important to you. If you ask they will be answered. They are free and there's no limit. Additional photos can also be made available. 

This is a specific item that is also being offered for sale in our brick & mortar location. It is possible that it has just been sold. Please ask if it is still available before purchasing. 

*It is our policy to require a signature on delivery of all musical instruments. Please let us know if you prefer no signature required when ordering or we will automatically require a signature. 

Year Condition Case
~1969 Very Good None


Imperial Guitar & Soundworks
Bill, Dianne
New Paltz, NY
3:05 AM
10:00 am - 6:00 pm Tues. - Sat. Mondays by appointment only

We accept VISA, Mastercard, Discover, and American Express, as well as certified checks and bank-to-bank wire transfers. Trades and consignments also welcome. Bank to bank wire transfers seem to work best on foreign orders. Wire transfer payment from your bank to: Bank of New York Newburgh branch Imperial Guitar & Soundworks Account number:6800007257 Incoming transit number:021000018 Notify on arrival of funds:(845)561-0202

All shipments made by us are fully insured. Also, all new products are fully covered by the manufacturer's warranty and used gear usually carries our 30 day mail order warranty. All stringed instruments sold by IGS are shipped UPS ground service for about $50.00. Alaska and Hawaii is shipped UPS 2 day Blue Label service for $75.00.(3 day Orange, 2 day Blue, and overnight Red Label is also available throughout the 48 states. Most small goods (pedals, accessories, etc.) are $7.00 for UPS ground service. Size and weight of amplifiers vary greatly. Typically UPS ground service starts at $40.00 and goes up. Please call on each item. GUITAR FREIGHT (Foreign) We ship instruments world wide. Our shipping department prides itself in its ability to safely deliver guitars anywhere in the world. We use UPS Air service, wherever possible. You are responsible for any import duties, V.A.T., etc. on delivery. It is advisable to consult with your local customs office.

48-hour approval on most items