STAX LEF-315 Guitar Dumbler Pedal Analog Dumbler Overdrive Pedals For Electric Guitar With Medium Distortion True Bypass--Shipped from Irvine Warehouse in California by USPS

Product Overview

STAX LEF-315 Dumbler is a compact pure analog overdrive pedal meticulously modeled after legendary high-end Dumble boutique tube amplifiers, delivering iconic smooth, creamy, warm sweet sustain tone sought after by blues, classic rock, fusion and jazz guitar & bass players. Equipped with a unique VOICE toggle switch, it switches two distinct amp voicings to adjust the bite and harmonic character of overdrive, easily covering soft clean boost, mild vintage crunch and thick singing high-gain lead saturation. Four independent control knobs (VOLUME / GAIN / TONE) plus VOICE mode switch offer full-range precise tone shaping for all playing styles.

Mini die-cast zinc alloy ultra-small chassis greatly saves limited pedalboard space for bedroom practice, studio tracking and long live touring gigs. Adopts industry-standard 3PDT hardwire true bypass circuit, fully preserves the original transparent clean tone of your instrument, zero volume drop, signal loss or unwanted tone coloration when the effect is turned off. Low-noise analog design ensures quiet performance even on stage.

Core Key Features

Authentic Analog Dumble Amp Simulation Circuit

Recreates the famous smooth creamy warm overdrive signature of vintage Dumble boutique tube amps, rich natural harmonic sustain, full low-end retention without harsh digital artifacts, highly responsive to picking dynamics.

VOICE 2-Way Timbre Toggle Switch

Adjust the bite and harmonic character of distortion: smooth mellow vintage tone / crisp punchy modern voiced overdrive.

Three Independent Tone Shaping Knobs

VOLUME: Master output volume, match clean amp channel volume for seamless tone switching

GAIN: Adjust overdrive intensity from transparent clean boost up to thick sustained high-gain leads

TONE: Rotate frequency balance from dark thick warm midrange to sharp bright cutting treble

Full 3PDT Hardwire True Bypass

Unbroken direct instrument signal path, zero background hum, no signal attenuation when pedal disengaged

Clear Red LED Status Indicator

Bright light clearly visible under dim stage lighting to confirm active effect state

Shockproof Blue Die-Cast Zinc Alloy Housing

Palm-sized ultra-small footprint, scratch-resistant solid blue metal shell, anti-slip rubber bottom pad for stable pedalboard placement

Ultra Low Stable Power Consumption

Only 10mA working current, fully compatible with standard 9V center-negative daisy-chain power supplies

Compact Mini Size, Pedalboard Friendly

95×45×48mm tiny dimension, lightweight to carry for gigs and recording sessions

Full Technical Specifications

Model: LEF-315 Dumbler Dumble Amp Simulator Overdrive

Brand: STAX

Effect Type: Pure Analog Boutique Dumble-Style Overdrive Pedal

Mode Selection: VOICE 2-position slide toggle switch

Controls: VOLUME / VOICE Switch / GAIN / TONE

Input Jack: 1/4” mono audio jack, Input Impedance: 470K Ohms

Output Jack: 1/4” mono audio jack, Output Impedance: 1M Ohms

Working Current: 10mA

Power Supply: DC 9V barrel adapter (center pin negative, outer barrel positive, adapter NOT included; cannot use battery power)

Material: Die-Cast Zinc Alloy Metal Chassis

Dimensions: 95(D) × 45(W) × 48(H) mm

Net Weight: 206g, Gross Weight (with package): 278g

Color: Blue

OEM/ODM Support: Available

Operation Instructions

INPUT Jack: Connect your guitar/bass or output of another effect pedal with 6.3mm audio cable

OUTPUT Jack: Connect to your guitar amplifier or INPUT jack of another effect pedal via 6.3mm audio cable

VOLUME Knob: Adjust master output volume of the overdrive effect

VOICE Toggle Switch: Switch two different overdrive harmonic timbres to change tone bite

GAIN Knob: Control the intensity of overdrive, from subtle clean boost to saturated thick lead distortion

TONE Knob: Adjust high-frequency brightness of the signal, dark warm mid-heavy tone or bright crisp treble

True Bypass Footswitch: Step down the footswitch to toggle between effect ON and bypass OFF state

LED Indicator: Lights up when the Dumbler overdrive effect is activated

Power Jack: Plug in DC 9V center-negative power adapter to supply power for the pedal

1. Manufacturer & Business Info

Brand Name: STAX

US Seller Entity: Sole Proprietor Local Warehouse Operator (Irvine, California)

Main Product Line: 300 Series mini phaser/tremolo/swell/fuzz/overdrive/EQ/booster/distortion/noise gate pedals, ABY switchers, DI boxes, LEF multi-effect stompboxes, LFS looper & foot controllers

Service: Retail sales, small bulk wholesale, OEM private logo customization for global musical instrument retailers worldwide

2. Global Compliance Certifications

FCC VOC (US Market): Meets US audio device electromagnetic interference standards

CE Certification (EU & UK): EMC Electromagnetic Compatibility + LVD Low Voltage Safety Certification

RoHS Compliance: Restricts toxic heavy metals inside circuit boards & metal housings

3. Product Safety Precautions

Power Safety

Only use regulated DC 9V center-negative power adapter with minimum 500mA output. Mismatched voltage or reversed polarity will permanently damage internal analog circuits. Unplug power supply when unused or during thunderstorms to avoid surge damage. This pedal DOES NOT support battery power supply.

Mechanical Operation Safety

Do not apply heavy force to footswitch, speed knob, mode toggle and 1/4” audio jacks to prevent internal hardware failure. Unauthorized disassembly of the zinc alloy housing will void the 6-month limited warranty for pre-owned 95% like-new inventory.

Cleaning & Storage Rules

Clean metal housing only with dry soft cloth; alcohol, chemical solvents, detergent or abrasive cleaners are strictly forbidden. Store pedals in cool dry indoor space, avoid long-term direct sunlight, high humidity, violent vibration and heavy physical impact.

Usage Environment Warning

Do not operate this phaser pedal near water, rainy outdoor environments or high-power magnetic equipment to prevent audio signal distortion and short circuit risk.