Origin Effects Bassrig Fifteen Bass Preamp and DI Guitar Effect Pedal

Origin Effects Bassrig Fifteen | The Definitive Studio Bass Amp Tone

All-Analogue Preamp & DI – Vintage B-15 Tone for Studio and Stage

The BASSRIG Fifteen is an all-analogue amp recreation, based on the legendary Ampeg® B-15 Portaflex® amplifier. Introduced in the early 1960s, the B-15 was the first dedicated bass combo amp and is still highly sought after today, with its low output power and unique cab making it the perfect choice for the studio. While its signature warm clean tones and subtle overdrive are synonymous with the sound of '60s soul records, it's at home in any genre that calls for a vintage bass tone.

The BASSRIG Fifteen recreates the sound, feel and character of this timeless bass rig. Origin Effects subjected a real, vintage Ampeg B-15 to a rigorous set of tests and measurements, then recreated its entire signal path in miniature using carefully designed solid-state circuitry. This includes the preamp, phase inverter, power amp and reactive load, all simulated inside the BASSRIG Fifteen. This adds up to an all-analogue preamp pedal that not only sounds just like the world's favourite studio bass amp, but has that all-important playing feel too.

Key Features & Benefits

• Complete Valve Amp-Style Signal Path: Recreates the entire B-15 circuit in all-analogue circuitry—preamp, phase inverter, push-pull power amp with reactive load, and even rectifier sag emulation.

• Authentic B-15 Tone & Feel: Captures the warmth, natural compression and vintage drive of the original—the soft compression, warm overtones, and thick, lustrous sound of the legendary Ampeg B-15 are perfectly reproduced.

• All-Analogue 1×15 Cabinet Simulator & DI Output: Accurate measurements of a mic'd up B-15 cabinet with an AKG D12 microphone. The balanced XLR output gives you an all-analogue simulation of the B-15's ported 1×15" speaker cabinet, perfect for direct recording or connecting to a PA.

• Flexible DI Cab Sim Switching: Three-position switch lets you select when the cab sim is active—FX (active only when engaged), ON (always active for use as a cabinet simulator for other preamps), or OFF (for use with external IR loaders).

• Extensive AMP OUT EQ Controls: HI CUT and LO CUT switches tailor the sound to any amp and cab—giving modern, full-range cabs the warm, tight response of a B-15 cab. HI CUT removes high-end for use with tweeter-equipped cabs; LO CUT applies the tight low-end roll-off of the B-15's small 1×15" cab. LF and HF controls fine-tune low and high frequencies to match any backline.

• BLEND Knob for Parallel Compression: Mixes clean signal in parallel with the amp simulation for low-end clarity and extra articulation—preserving clarity when using overdriven sounds.

• Familiar, Responsive Controls: DRIVE functions like the volume control of a non-master-volume valve amp; BASS and TREBLE controls affect both frequency response and overdrive character; OUTPUT sets overall level without altering drive character.

• Premium Construction: Brushed stainless steel enclosure with premium components throughout. High-quality buffered bypass for seamless integration with long signal chains.

• Designed and Built in England: Hand-assembled with meticulous attention to detail.

• Studio Recording

• Live Performance

• Direct-to-PA / Ampless Rigs

• Vintage Bass Tone Enthusiasts

• Soul, R&B, Rock, Pop, Jazz, and All Genres

Tech Specs

• Type: All-Analogue Amp Recreation & DI Pedal

• Inspiration: Ampeg® B-15 Portaflex® Amplifier

• Circuitry: All-Analogue Valve Amp-Style Signal Path

• Controls: Drive, Blend, Output, Bass, Treble

• AMP OUT EQ: HI CUT Switch, LO CUT Switch, HF Control, LF Control

• DI Cab Sim: 3-Position Switch (FX / ON / OFF)

• DI Ground Switch: GND / LIFT

• Input: 1 x 1/4" TS (INSTR)

• Outputs: 1 x 1/4" TS (AMP OUT), 1 x XLR (DI OUT)

• Input Impedance: 1 MΩ

• AMP OUT Impedance: 500 Ω

• DI OUT Impedance: 1 kΩ

• Current Draw: 200mA

• Power Requirements: 9V DC centre-negative 2.1mm barrel connector (not included)

• Dimensions (L x W x H): 146 x 93 x 65 mm (5.7" x 3.6" x 2.5")

• Weight: 846g (1.86 lbs)

• Bypass: High-Quality Buffered Bypass

• Construction: Brushed Stainless Steel Enclosure

• Origin: Designed and built in England

The BASSRIG Fifteen is the definitive studio bass amp tone in a pedal. Until now, only a real vintage B-15 could deliver this warm, punchy, and responsive tone—the sound that has graced more hit records than any other bass amp in history. Origin Effects has captured not just the sound but also the playing feel of this classic amp, recreating the entire valve signal path in all-analogue circuitry.

Whether you're recording direct in the studio, going ampless on stage, or running into your existing backline, the BASSRIG Fifteen delivers the unmistakable vintage B-15 character. The cabinet-simulated DI output gives you a studio-ready tone straight to the mixer, while the comprehensive AMP OUT EQ ensures your on-stage sound matches your DI tone. With its blend control for parallel clean signal, flexible DI switching, and premium construction, the BASSRIG Fifteen is the ultimate tool for bassists seeking that classic recorded bass sound.

Experience the definitive studio bass tone. Get the BASSRIG Fifteen today.

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