Inject your bass tone with enhanced attack and presence with the Harmonic Booster from Darkglass Electronics, a preamp pedal that allows you to cut or boost up to ±20 dB of clean gain. Sporting active 3-band EQ with semi-parametric mids and a unique Character tone control, you can shape your signal to your heart's content.

Preamp Pedal for Bass Guitars    ±20 dB of Clean Boost or Cut    Character Knob for Tonal Shaping    Semiparametric Mid-Frequency Control    Enhanced Attack and Presence    Bass and Treble Shelving EQ

• ±20 dB of clean gain boost or cut
• Unique Character knob offers the optimal amount of tone-shaping circuitry with counterclockwise providing a flatter frequency response
• Mid Gain delivers ±20 dB of boost or cut for selected mid frequency
• Sweepable mid frequency between 250 Hz to 2.5 kHz
• ±20 dB at 80 Hz for Bass control
• Treble control provides ±20 dB at 5 kHz

Designed to be the perfect complement to Darkglass distortion circuits, the flexibility and portability of the Harmonic Booster is also the perfect one-stop solution for gigging musicians in search of a precise and harmonically rich clean preamplifier. The Harmonic Booster is derived from the first few gain and filter stages of what would later become the core of Darkglass overdrive technology.

Related Questions and Answers

Q: 1. will it work with windows 10?

A: Absolutely ... I've been using it on Win10 today on my system.

Q: 2. can this be repurposed and used to pre amp a playback tape head? i know this is unconventional but i just need it to work. HELP!

A: The Rolls MP13 is a mic preamp so it is designed to receive a mic level signal but the output from the playback tape head is a line level signal. It could work, as long as you can control the output level from the tape head so it does not overload the input of the preamp, unless that is the desired effect that you wish to achieve.

Q: 3. Is the case metal or plastic? Any RFI suppression built in?

A: Works Great. Metal case. I used it with an ethernet adaptor and was able to send the audio signal through a schools cat5 wiring for their school PA System.

Q: 4. Does it require any additional software?

A: Software CD included with this product.

Q: 5. Hello.Is the rca phono input compatible with a moving-coil input?Thanks

A: One disadvantage of the moving coil cartridge is that it generates a smaller voltage and requires a secondary preamplifier, sometimes known as a head amp. The head amp increases the voltage enough for a phono input on a stereo component. Some moving coil cartridges have higher output and are compatible with a standard phono input, but its output will be somewhat lower than a moving magnet cartridge. So this ART phono preamp is most likely NOT compatible with many moving-coil cartridges unless the manufacturer has designed the cartride for use with a standard phono preamp like the ART.

Q: 6. Will this preamp boost an XLR signal a further distance than without using it? I have to cover a distance of ~300ft and am trying to assure no loss of signal.

A: The Rolls Mini-Mic Preamp is not really designed for boosting signal on a long cable run. For 300 feet, you should use high quality shielded audio cables to avoid signal loss and if you do need to increase the gain without adding noise, you might want to try the Cloud Microphones Cloudlifter CL-1 Mic Activator (B&H # CLCL1) which improves signal-to-noise ratio and improves the performance of passive microphone signals by driving stronger, cleaner signals over longer XLR cable runs.

Q: 7. Can this be re-purposed to be used from an XLR out from the back of my amp (Peavy Vypyr Pro 100) to patch headphones in to monitor the signal being sent from the amp to the mixer board on the bands PA system?

A: If your amp is a XLR Mic level output yes. It will take Line level out also but it will take much less boost to power the headphones. If it is speaker level out you may blow out the preamp.

Q: 8. Does this provide "plug in" power to the 3.5mm input jack?

A: Yes, the Rolls MP13 will supply plug-in power to the 3.5mm mic input.

Q: 9. Works for tripods too?

A: This polish should be acceptable for poles made out of aluminum or graphite.

Q: 10. Will this amplifier eliminate the tinny sounding play back on my Mac when trying record from my turn table?

A: I had no problem with tinny sound