SWR has partnered with Marcus Miller - arguably the most influential bassist of his generation – to create the ultimate tool for bassists. Or as Marcus calls it: "The missing link between your bass and a great sound!" Working closely with SWR engineers, Marcus painstakingly customized the feature set of this preamp to accommodate his own distinctive array of tones, while taking into consideration the needs of other bassists of all styles. The result is simply one of the most versatile bass products ever developed.

One-channel Tube / solid-state preamplifier with two selectable inputs, Marcus Miller modified Aural Enhancer™ circuit, Tube Direct Out with Pre/Post and Compression position select, tube-driven 3-band active EQ, Bass Intensifier™, studio-quality tube-driven compressor, Boost feature w/ volume and compression Blend, Mute switch, side-chain effects loop with Blend control, 4-function footswitch (Bass Intensifier, EQ Bypass, Effects Loop, Boost) included.

MPN: 4405200000

- Two Selectable Inputs for Easy Instrument Changes
- 3-Band Semi-Parametric Tube-Driven EQ with Sweepable Mids
- EQ Bypass Capability
- Marcus Miller-Modified SWR Aural Enhancer Circuit with Pull Defeat
- All-Tube Studio-Quality Direct Out
- Mute Switch
- Bass Intensifier Circuitry
- SWR Studio-Quality Tube-Driven Compressor with Pre or Post EQ "Comp Position" Switch; Boost Feature with Volume Control & Compression Blend
- Side-Chain Effects Loop with Blend Control
- Selectable Line Out for Tube DI, Post EQ or Compressor position Out
- 4-Button Footswitch (Bass Intensifier, EQ Bypass, Effects Loop, Boost) included

- Channels: One Channel (Two Selectable Inputs for Easy Instrument Changes)

Controls

Front Panel:
- Inputs
- Mute On/Off Switch
- Bass Intensifier™: On/Off Switch, Level, Cutoff
- Compression: On/Off Switch, Threshold, Ratio, Comp Position, Attack, Release, Meter
- Boost: Level, Comp Blend, Level/Comp Blend On/Off Switch
- Pad On/Off Switch
- Preamp Clip LED
- Gain
- Aural Enhancer
- EQ: Bass, Semi-Parametric EQ with (Low, Mid, High), Treble
- EFX Blend
- Master
- Power Switch

Back Panel:
- XLR and 1/4" Preamp Out with Ground Lift Switch
- Tube DI with XLR and 1/4" Out with Ground Lift Switch, Level, 00 to 1800 Phase Switch and 3-Position Direct (Pre)/Compressor Output/Line (Post) Switch
- Effects Send and Return Jacks
- Footswitch Jack
- Tuner Out Jack
- Aux Input Jack (Instrument)

- Covering: Brushed Blue Anodized Aluminum Rackmount Panel with Black Control Knobs and Chrome Handles
Weight 13 lb (5.9 kg)

Dimensions
- Height: 3.5 in (8.9 cm)
- Width: 19 in (48.3 cm)
- Depth: 11 1/8 in (28.3 cm)

- Tube Complement: 2 X 12AX7
- Accessories: 4-Button Footswitch (Bass Intensifier, EQ Bypass, Effects Loop, Boost) Included