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The Elevator Multi-Level Booster from Radial Engineering is a multi-level power booster and buffer which gives you the power to customize the sound of your guitar, amplifier, and pedal chain. The design begins with a 100% discrete class-A signal path that is void of integrated circuits (ICs). This eliminates zero-cross distortion, a problem which tends to cause other boosters to sound harsh.
On the ground floor (Level-1), a selector switch allows you to set the Elevator to true bypass for a direct feed to the amp when the power booster is out of the circuit. Level-2 lets you activate a unity gain buffer that will drive your guitar signal to 50' without noise. This eliminates problems such as tone loss due to cables, and popping when switching with high-gain amps. The Level-3 Drag Control is a load correction circuit which replicates the 'tone and feel' of playing with your guitar connected directly to your amp. Level-4 is a 'baseline' power booster that drives the front end of the amp for more crunch and bite. This recessed 'set & forget' control is particularly useful when using vintage amps that produce less gain. Level-5 is a clean power booster that is activated using the footswitch and delivers up to 18 dB of pure gain for soloing. Level-6 is a three-position mid boost switch that lets you increase the mid range content for added sustain.
The compact enclosure fits nicely on any pedalboard and is powered using a standard Boss-style 9 VDC power supply. A sturdy footswitch controls the internal gold-sealed military-grade relay for maximum durability, while the solid 14-gauge steel outer casing protects the sensitive internal electronics and rules out the possibility of accidentally damaging the circuit board.
100% discrete, class-A circuit
Drag Control load correction for natural tone
Lets you customize your signal for optimal performance
Delivers up to 18 dB of clean power boost
In the Box
Radial Engineering Elevator Multi-Level Booster
Limited 3-Year Transferable Warranty
Table of Contents
Audio Circuit Type
100% Discrete class-A
20 Hz to 20 kHz
Total Harmonic Distortion
PZB Off: Variable 22 kOhms to 1 MOhms
Drive Preset Mode: Unity to +18 dB
Boost: Unity to +18 dB
Output Clip Level
PZB On: 1000 ohms
Equivalent Input Noise
< 6° at 100 Hz
9 VDC Adapter / 50 mA
14-gauge steel chassis & outer shell
Durable powder coat
4.7 x 3.5 x 1.9" (11.9 x 8.9 x 4.9 cm)
1.25 lb (0.57 kg)
Radial Engineering Elevator Multi-Level Booster Review