collapse expand iconDescription

The Darkglass Microtubes 500, a premium bass preamp from the innovative minds at Darkglass Electronics. This powerful bass preamp offers a versatile three-band EQ and tube overdrive. This full-featured preamp packs serious tone-shaping power into a compact, pedalboard-friendly chassis. With its three-band EQ, tube overdrive circuit and 500W of power, the Microtubes 500 provides bassists an array of studio-quality sounds for both live performance and recording situations.

Versatile Three-Band EQ Offers Precise Tone Control

The Microtubes 500 features a versatile three-band EQ with controls for bass, midrange, and treble frequencies. Sculpt your tone with the bass knob, which adjusts from -12dB to +12dB at 40Hz. The midrange control spans from 150Hz to 3kHz with a -12dB to +12dB range, allowing you to boost punchy lower mids or cut boxy frequencies. A treble control offers -12dB to +12dB of adjustment at 6kHz for dialing in crisp highs or taming overly bright tones.

Tube Overdrive Circuit Delivers Vintage Distortion

At the heart of the Microtubes 500 is an analog tube overdrive circuit that produces vintage-inspired distortion and overdrive effects. Drive and blend knobs provide control over the amount of saturation and the balance of clean and overdriven signals. From subtle grit to heavily saturated distortion, this tube overdrive has a wide range of sounds on tap. The 12AX7 tube used in the circuit helps generate rich harmonic overtones, warmth and compression.

500 Watts of Power for Any Gig

With 500 watts of power at your fingertips, the Microtubes 500 packs more than enough volume and headroom for any live performance situation. The preamp section's studio-grade components ensure your tone remains clear and articulate even at high volumes. XLR, 1/4" TRS, and 1/4" TS connections provide options for routing your signal to front-of-house mixers, power amps and more.

Premium Components and Road-Ready Design

From its rugged aluminum chassis to its high-end components, the Microtubes 500 is built to withstand the rigors of life on the road. Studio-grade resistors, capacitors, and potentiometers help produce a transparent signal path with low noise. With its compact size and top-mounted jacks, this preamp is ideal for tight pedalboards and fly dates where space is at a premium.

Darkglass Microtubes 500v2 Black
Darkglass Microtubes 500v2 Black
Darkglass Microtubes 500v2 Black

collapse expand iconFeatures

A much-requested new feature is the cabinet simulation which utilizes an improved version of our Cab Sim module. The module has three slots for hi-res impulse responses which are active for both the headphone output and the balanced XLR DI output. We have also added a one-knob compressor with intelligent makeup gain for level consistency, while a new ultra-quiet graphic equalizer now replaces the previous 4-band type one.

WARNING: This product can expose you to chemicals including Tetrabromobisphenol A, which is known to the State of California to cause cancer. For more information go to

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