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Greer Amps
Greer Amps Mori Drive Overdrive Pedal
Tube Screamer-inspired overdrive with refined midrange and increased output
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The store is open 10am - 6pm Monday to Saturday and 11am - 5pm Sunday and bank holidays.
The stock information shows the quantity of units that are available to purchase at the Guildford store and the quantity of units that are available at our off-site Guildford warehouse. These stock levels are updated in real time.
Our Click and Collect service is available at our Guildford store from 10am - 6pm Monday to Saturday, and 11am - 5pm on Sunday. You can either choose Click and Collect as your delivery option online or, during store opening hours, call our sales team on 01483 456777 for assistance with placing your order.
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If the only available stock is in our off-site warehouse it can be brought to the store location for you to try - you just need to contact the store within opening hours. Please note any requests received after 3.30pm will not arrive at the store until the following morning.
Please be aware that stock availability can change quickly both online and in-store, so we would always recommend placing your Click and Collect order as soon as possible to reserve your item.
SKU: MORIDRIVE
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Product Description
The Greer Amps Mori Drive is a compact, hand-built overdrive pedal that captures the feel of a classic Tube Screamer while adding extra clarity, output and versatility. Voiced to sit between traditional TS and Klon-style circuits, it delivers focused mids, smooth clipping and enough volume on tap to push any valve amp into rich, harmonically complex drive.
At its core is the legendary JRC4558 op-amp, tuned by Greer to provide a more refined midrange and a less congested, more open response than many vintage-inspired drives. Whether you are tightening a high-gain rhythm tone, adding a touch of grit to a clean channel or stacking with other pedals for layered textures, the Mori Drive offers a familiar feel with a more modern, usable twist.
With simple Drive, Tone and Volume controls, dialling in your sound is fast and intuitive. The pedal is designed to work equally well into clean and already driven valve amplifiers, making it a flexible choice for players who need a reliable base overdrive that can cover boost, low-gain crunch and saturated lead duties. True bypass switching keeps your core tone intact when the pedal is off, while the analogue circuitry ensures a natural, amp-like response under the fingers.
Built by hand by Greer Amps, the Mori Drive is made for players who love the mid-pushed character of a Tube Screamer but want more headroom, a smoother top end and a drive that stacks beautifully with the rest of their board.
Classic TS Feel with Modern Refinement
Inspired by vintage Tube Screamer circuitry, the Mori Drive retains the familiar mid-focused punch that helps your guitar cut through a mix, but with a smoother clipping response and more open feel. This makes it ideal for players who enjoy the classic TS sound yet want a pedal that feels less boxy and more responsive across different guitars and amps.
Balanced Voice between Tube Screamer and Klon
The custom-tuned frequency response sits between traditional TS and Klon-style voicings, giving you the best of both worlds. You get enough midrange emphasis to stay present in a band context, along with added clarity and low-end definition that keeps chords articulate and single notes full, even at higher gain settings.
JRC4558 Op-Amp and Increased Output
At the heart of the circuit is the classic JRC4558 operational amplifier, chosen for its musical, organic overdrive character. Greer have paired it with an increased output level compared to many standard Tube Screamer designs, so you can use the Mori Drive as a powerful clean or dirty boost to hit the front of your amp harder and unlock more sustain and harmonic richness.
Stacks and Pairs Perfectly with Valve Amps
Designed specifically to pair seamlessly with both clean and driven valve amplifiers, the Mori Drive excels as the foundation of your overdrive sound or as part of a stacked gain setup. Its smooth, controlled low end and refined mids mean it layers well with other overdrives and distortions, letting you build complex, multi-stage gain structures without muddiness.
Features
- Vintage-inspired Tube Screamer Style Circuit - Delivers the familiar, mid-forward overdrive that has defined countless classic guitar tones, making it perfect for tightening rhythms, adding edge to cleans and helping leads sit clearly in a mix.
- Custom Voicing between TS and Klon - The tailored frequency response bridges the gap between traditional Tube Screamer and Klon-style pedals, offering enhanced clarity and low-end presence while retaining the focused mid character players rely on.
- JRC4558 Op-Amp with Higher Output - Utilising the revered JRC4558 chip and a boosted output stage, the Mori Drive provides smooth, musical clipping and enough level to act as a potent boost, driving your amp into rich, dynamic overdrive.
- Ideal for Valve Amps and Stacking - Voiced to work effortlessly with clean and driven valve amplifiers, the pedal also excels when stacked with other drives, allowing you to create versatile gain stages without sacrificing definition or touch sensitivity.
Specifications
General
- Brand: Greer Amps
- Product Type: Effects Pedal
- Pedal Type: Overdrive
- Drive Type: Tube Screamer Style
- Circuit Type: Analogue
- Bypass: True Bypass
- Channels: 1
- Audio: Mono
Controls
- Drive
- Tone
- Volume
Electronics
- Operational Amplifier: JRC4558
- Power / Voltage DC: 9V
- Power Supply: 9V DC (Centre Negative)
- Battery Powered: No
Connectivity
- Inputs: 1 x 1/4"
- Outputs: 1 x 1/4"
Construction
- Hand-built by Greer Amps
