SKU: 73151581455
sunn beta preamp pedal

sunn beta preamp pedal Omega Lead - Guitar pedal based on Sunn Beta Lead – Global Music Imports

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Description

sunn beta preamp pedal Omega Lead - Guitar pedal based on Sunn Beta Lead – Global Music ImportsBased on the Sunn* Beta Lead. January 2025 Update We have updated the enclosure design and styling of our pedals! The new models feature a thick, all steel enclosure with a new faceplate design. Note; Currently the pedal is shipping with the Lead Bass switch marked as "Shift". We felt this wasn't sufficiently clear, so we are waiting for a new set of panels to arrive with clearer markings, but if you're happy with this labelling, they are available to


Based on the Sunn* Beta Lead.

January 2025 Update - We have updated the enclosure design and styling of our pedals! The new models feature a thick, all-steel enclosure with a new faceplate design.

Note; Currently the pedal is shipping with the Lead/Bass switch marked as "Shift". We felt this wasn't sufficiently clear, so we are waiting for a new set of panels to arrive with clearer markings, but if you're happy with this labelling, they are available to order now. The down position is for Lead Mode, and up position is Bass Mode.

Synonymous with stoner rock and doom metal, the Sunn Beta Lead is one of the most versatile amplifiers ever designed. The unique CMOS distortion circuit generates harmonically rich distortion, which is then shaped by an active EQ circuit with extremely wide range controls. The result is an amp that can go from sparkly clean, to edge of breakup, hard rock and pure fuzz with continuous sweeps of the controls.

* Sunn is a registered trademark of FENDER MUSICAL INSTRUMENTS CORPORATION.





Product Details - Omega Lead

Controls

  • Drive and Gain - These controls set the gain of the CMOS distortion stage. On the original amp, a single, dual-gang potentiometer was used for this control, but we decided to split it into two independent controls for extra versatility. With so many different sounds available, it's impossible to give a description of their behaviour. Experiment and see what you like!
  • Bass, Mid and Treble - 3-band active tone control with a very large +-15dB sweep range. Don't be afraid to visit the extremes, as the circuit drastically changes its behaviour at the top and bottom range of motion of these controls.
  • Volume - Controls the output signal amplitude.
  • Tight - Tames the bass frequencies for a slightly grittier but brighter sound.
  • Bass/Lead - Switch between "Beta Lead" and "Beta Bass" mode. A handful of components are switched in and out, but these have a huge impact on the sound, resulting in a bassier, beefier sound (Bass), or a thinner, brighter and more aggressive sound (Lead).
  • Active Switch - Engages or bypasses the pedal with a relay (true bypass).



The original

The Sunn Beta Lead is known for two things. First, its incredible deep bass and fuzzy sound that made it so popular. Second; it's ridiculously loud.

Utilizing an integrated circuit chip designed for digital logic circuits, the engineers at Sunn Amplification designed an amplifier based on the concept of abusing a CMOS logic inverter and contorting it into a guitar amplifier. The front panel stated the phrase "Digital C-MOS Technology", and while the chips used to generate the disortion were in fact designed for digital logic circuits, they were being used to process an analog input signal, something they were never intended for.

The result was surprisingly pleasant, and the Beta Lead became one of the most iconic solid state amps ever built. Used by Kurt Cobain and The Melvins, among many others, it has an extremely wide sonic palette. This means that for those unfamiliar with the amp, it can sound straight up awful, if you don't know how to set the controls. Thankfully, it has numerous sweet spots, which range from bluesy edge-of-breakup, to rock and roll, to heavy metal and fuzzy doom.

Features

  • True Bypass with Relay switching.
  • Soft-touch footswitches.
  • Internal voltage-boost mechanism ensures circuit runs at same voltage as the original amp.
  • Rugged 16 gauge (1.6mm) steel enclosure with textured powder coat finish.
  • Solid aluminium knobs.

Technical Specs

  • Power Requirement: 9V DC, 180mA
  • Power connector: 2.1mm center-negative barrel jack
  • Dimensions: 145mm (W) 108mm (D) 61mm (H)
  • Dimensions (with packaging): 185mm (W) 130mm (D) 70mm (H)

 



About Preamplifiers

This is a preamplifier, and not a distortion pedal. We do not recommend connecting this device to the input of a normal guitar amplifier. Instead, it is best used in one of the following ways:

Connected to the Effects Return / Power Amp Input of a guitar amp

Connect your guitar to the pedal input, and connect the pedal output to the effects return. This bypasses your amplifier's built-in preamp, and the signal goes through the pedal instead.

Connected to a dedicated power amp

Some examples include the Seymour Duncan Powerstage, Harley Benton GPA-100, or the Mooer Baby Bomb.

Connect the pedal directly to an audio interface

For recording purposes, the pedal can be connected to either an instrument or line-level input on your audio interface. Using a speaker cabinet simulation plugin, such as an Impulse Response (IR) loader, to emulate the effect of a speaker cab is highly recommended.

"

Shipping Notes
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  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 73151581455

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billy
Fort Morgan, US
★★★★★ 5
My dog is a toy destroyer
Color: Consuela the Cactus - Large, Size: Large Dog, Color: Consuela the Cactus - Large, Size: Large Dog
I’ve had a hard time trying to find toys that my dog, Zara loves because she’s actually very picky. Ive gotten plenty of Kong toys that are well known to be indestructible but she wants nothing to do with them. Then I got her ropes and that seemed to be good for a while until she was getting sick in the middle of the night from eating all of the string. Stuffed toys aren’t good because she’ll rip them within seconds and eat all of the stuffing. I felt like I’ll never score the perfect toy for her. I found the three layered cactus toy and decided to give it a go. It’s clearly designed to be ripped and destroyed to get the ball in the middle which is actually really cute and fun to see all of the layers. The cactus arms have stuffing and of course that’s the first thing she went for and ate. I had to watch her and make sure I took the stuffing away before she ate it. And before I knew it, she ate half of the first layer fabric lol once she got through the first layer, all she’s been doing is walking around the house with the toy in her mouth. But now she’s tired and passed out on the couch from all of the fun. This toy won’t last long with a toy destroyer but it sure does give them something to do and it’s a cute toy. I do recommend!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 26, 2024
K
Verified Purchase
Klara Gengler
Omaha, US
★★★★★ 5
Last a while. Will be buying more toys soon.
Color: Consuela the Cactus - Large, Size: Large Dog
Best dog toy I have ever bought. I have three dogs, two at the time I bought this toy. It took them over a year to break through the first layer. The flower comes off first so be careful your dog doesn't swallow it. It still has the second layer so it still looks like a cactus. No stuffing to clean up when they tear into it, which makes it far less messy than other toys. One of my dogs is obsessed with fetch so I use it like a ball inside. The oval shape makes it hard to ensure when it bounces that it will bounce straight. It's bounced into walls and other stuff that I wasn't intending it to hit. Not much of a squeak so I can let them play with it for hours and I don't get annoyed with the noise. Great toy that lasts a while.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 25, 2025
C
Verified Purchase
Cassie
Natrona Heights, US
★★★★★ 5
Nice Value
Color: Consuela the Cactus - Large, Size: Large Dog
Very cute! Its soft and feels like it is well made. It is a heavier toy and a tougher one. Not a plush toy. I will order again for our older dogs. Nice value for sure!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 11, 2026
B
Verified Purchase
Blakely McAllister
Belleville, US
★★★★★ 5
Great toy for our best boys!
Color: Consuela the Cactus - Large, Size: Large Dog
You can never go wrong with BarkBox toys and this was no exception. Our dogs like toys that have squeakers and that they can tear into. This style of toy fits the bill. The design is cute as well. I’ve had this in the house for months and, while it’s definitely seen better days, it’s still intact and they haven’t gotten to the inner layer. (Not for want of trying.) The perfect type of toy for our fur babies.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 10, 2026
A
Verified Purchase
Amazon Customer
Cuba, US
★★★★★ 5
Survives 7 months so far.
Color: Christmas Consuela, Size: Large Dog
It is still intact after nearly 7 months of constant play. My blue heeler normally destroys toys in just a few weeks. Consuela has exceeded expectations of survival with an extremely chewy, destruction prone dog.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2026

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