The Messenger is a high fidelity instrument preamplifier, perfect for the studio, live performances, or practicing at home. The preamp offers a wide array of features in a compact, easy to use format.

Broughton Audio

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Review by Talk Bass.com

Messenger DI

Der parametrische Equalizer bietet drei Equalizer-Bänder mit unabhängiger Steuerung von Frequenz, Bandbreite und Pegel für jedes Band.

Jedes Band hat bis zu 15 dB Verstärkung oder Absenkung. Die Bandbreite reicht von 0,25 bis 2,5 Oktaven.
Tief - 40 bis 400 Hz
Mittel - 200 bis 2.000 Hz
Hoch - 1.000 bis 10.000 Hz

The Parametric Equalizer offers three bands of equalization with independent control of frequency, bandwidth, and level for each band.

Each band has up to 15 dB of boost or cut. The bandwidth ranges from 0.25 to 2.5 octaves. 
Low - 40 to 400 Hz
Mid - 200 to 2,000 Hz
High - 1,000 to 10,000 Hz

Parametric Equalizer

The Silver Deluxe is a JFET boost with a Fender tone stack EQ. The JFET topology adds some character to your signal, while the passive EQ delivers the familiar response found on many classic tube amps.

The EQ is an exact recreation of the Fender tone stack with Mids. It is also the same as the Alembic F2B.

The Silver Deluxe is designed to produce mild JFET overdrive when pushed. This is achievable with instrument level signals, and powering the pedal with a 9V supply. For a clean output, it is recommended to use a higher supply voltage.

Demo by Shaggy45

Demo by Yaksonator

Silver Deluxe

The Fliptop is a JFET preamplifier that is modeled after the B15 amplifier. The gain staging and EQ sections were carefully designed to give the feel and response of the vintage tube amp, offering a good range of pillowy tone that can be driven to the point of light overdrive if pushed.

 In addition to the James stack EQ and gain staging, the Fliptop adds a Master volume control on the output so you can dial in the amount of drive you want while adjusting the volume as needed.

 The Cab knob is essentially a wet/dry control, allowing you to apply 0 to 100% of the cab tone to the preamplifier output. Dialing in more of the cab response tightens the low end and cuts the high frequencies for a warm, vintage tone. The frequency response is modelled after the 15" cab.

Review by Bass Gear Mag

FlipTop

The Filter FX Loop is a utility pedal used for mixing any external effect with your clean signal while offering filtering, level, and phase controls for further tone shaping.

 The Filter FX Loop works by splitting your signal into two parallel paths: Clean and Effect.

The Clean path has LPF and Level controls (white knobs).
The Effect path has HPF, LPF and Level controls (blue knobs) as well as a phase switch. The HPF is placed before the effect, while the LPF, Level, and Phase controls are post effect.
The two signals are summed together and sent to the output.
 
The filters can be used to alter the feel and performance of an effect. Experiment with your effects to find new possibilities.