Sensitive and touchy, This bass fuzz has tremendous bottom end and a beautiful harmonic structure that sounds blistering with a guitar too...The harmonic structure can be radically altered using the "PINCH" knob. It adjusts the pulse width of the waveform.

In the leftmost position, the waveshape is quite symmetrical which produces a smooth creamy sound. Turning it up slightly introduces lovely intermodulation distortion. Turning it clockwise narrows the waveshape into asymmetrical pulses, making the tone reedier and brassier. This also introduces an unusually smooth ''gating'' action, which gives you an absolutely eerie silence between notes.

At most settings you will notice that low frequency pressure is preserved. This circuit has a frequency response that continues several octaves below audibility. The subs will knock everything off of your amps, so put the the bottles on the floor. No kidding.

The "WOOL" knob adjusts the amount of fur around the note. The "EQ" knob tilts the spectral response, turning to the left adds lows and softens the highs. Turning to the right adds highs, then mids, and finally reduces lows. the "OUT" knob Is designed for smooth repeatable level settings

In our continuing effort to be friendly towards the earth, the universe and it''s inhabitants; no animals were harmed during the making of this pedal.

Oh, and the circuit (designed by Chuck Zwicky) draws less than one-half of a milliampere (0.0004 amps, typical). That is less than one-hundredth the current consumption of most ''commercial'' pedals, giving this pedal about as high a battery life as you can find anywhere. In fact, if you use an alkaline battery and always unplug the input cord between sessions, you may never have to change it at all!

NEW! Woolly Mammoth's now have standard Boss-type 9VDC power jacks and red on/off leds!

Year Condition Color Case
2013 Brand New Hand Painted None


Tommy's Guitar Shop
Tommy's Guitar Shop
Everett, WA
5:03 AM
Store Hours: Monday through Friday 10:00am - 7:00pm Saturday 10:00am - 6:00pm Pacific Standard Time. Closed Sunday. Tommy's Guitar Shop, 1911 Hewitt Ave, Everett Wa. 98201. Phone: 425-252-9252 email:

$$$$, Visa, M/C, Discover, AMEX, Cashiers Check, Money Order & Bank Wire. Paypal is also accepted, but requires approval from Tommy.

We ship WORLD WIDE. Buyer pays all shipping & insurance costs. NO C.O.D. shipments. WE ship via Fed EX or US Postal world wide. I inspect every piece of equipment prior to packing to assure quality and perfect working order when leaving our shop. I pack everything myself to the HIGHEST standards, for safe shipment any where in the WORLD.

Tommy's offers a 48 hour approval period for all shipped guitars, & effects. All shipping costs are the buyers responsibilty. All returned items paid by credit card are subject to 3% restocking fee. All returns require prior approval from Tommy. All shipped amplifier sales are final.