UL 901 Bass Amp

UL 901 Bass Amp


The Legend Returns
Epifani is proud to (re)introduce the UL-series professional bass amplifier. This is the original Epifani sound, the tone that started a revolution. Used for decades by legendary bassists like Oteil Burbridge, Anthony Jackson, and Matthew Garrison.

  • 1000W

  • 3-band Epifani EQ, Mid-Cut, Treble Target

  • Auto-Sensing Voltage

  • PureSound D.I. Output

  • Effects Loop

  • 6 pounds

  • Rackmount Kit Included

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Modern. Classic.


Signature Mid-Cut
A simple yet powerful mid-cut feature tuned by Nick Epifani based on feedback from some of the world’s best bass players. Are you ready for the funkiest slap sound ever?

Totally Redesigned
The new UL 901’s engineering features modern components like a light-weight, high-reliability digital power supply, an updated PureSound D.I. section, and a refined EQ that gives you total control over your sound in any playing situation.

Superior Engineering
UL 901 brings you 1000 watts of pure power. And when you’re on the road the auto-sensing power supply automatically detects the correct voltage no matter where you are in the world.


The Ultimate EQ
UL 901 features a powerful EQ designed for fine tuning in any playing situation. Dial in the perfect sound for any style in any venue.

Studio Ready
Heading into the studio? The award-winning PureSound D.I. gives you the world’s most flexible pre-amp for studio recording in style. No need to plug in a cabinet. Just send your single to the engineer—pre or post EQ—and bring your signature tone to every recording.

Included Accessories

UL 901 Bass Amp includes a custom rack mount kit, US universal power cable, and EU power cable.




Tone Controls
Shelving, +22 dB @ 40 Hz
Mid: +17 dB @ 450 Hz
Treble: Shelving, +22 dB @ 3 kHz or 6 kHz
Mid Cut: -8dB @ 800Hz

6 pounds (2.7 Kg)

11.25 inches (W) x 10 inches (D) x 3 inches (H)
285 mm (W) x 254 mm (D) x 76 mm (H)

Amplifier Response
20 Hz - 25 kHz

98 dB (1W @ 1m)

Auto Adjusting Voltage
115 Volts or 240 Volts, 50 or 60 Hz
750 or 1000 Watts

Single Channel Preamp
Class-D Power Amp
Switch-Mode Power Supply

Power Rating
UL 901 [750W]
750 Watts RMS
Minimum Load: 4 Ohms

UL 901 [1000W]
1000 Watts RMS
Minimum Load: 2 Ohms

1/4-inch TS Phone Jack Passive: 470KΩ
- Active: 200KΩ
Output: Combination SpeakonTM and 1/4-inch
Send: 1/4-inch TS Phone Jack 200KΩ
Return: 1/4-inch TS Phone Jack 50KΩ
Tuner Out: 1/4-inch TS Phone Jack
Foot Switch: 1/4-inch TRS Phone Jack
Direct Out: Low Impedance XLR w/ Level Control
Pre/Post EQ: Selectable Switch sets DI Output to Pre/Post EQ