In Stock & Ready to Ship
Used Sushi Box FX Underground Accelerator
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Pay Later in Easy Monthly Payments Up to 6 Months
HOW IT WORKS
We offer 0% interest Synchrony financing on qualifying purchases. To apply, click the red button above to fill out the financing application. Once on Synchrony’s website, click “apply now” to fill out the financing application.
Please note, Synchrony will advertise a standard interest rate of 29.99% interest—which is a default rate. Once you are approved, we will complete the transaction with the applicable 0% term for your item. At this point you are only applying for financing on Synchrony’s website, not completing a transaction.
After completing your application, call us at 412.343.5299 or use the website chat feature during regular business hours to complete your transaction.
Available finance terms are listed on each product page below the product’s listing title.
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Factory Setup
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Returns
Guitars & Basses (Online & Phone Orders)
We want you to be completely satisfied with your purchase. If you need to return a
guitar or bass, here’s what you need to know:- Returns must be initiated within 3 days of receiving your order.
- To initiate a return, call us at 412-343-5299 for a return authorization number.
- Return shipping is the customer’s responsibility, unless the item arrived damaged or the wrong product was sent.
- If your item shipped with “Free Shipping,” the original outbound shipping cost will be deducted from your refund.
- A 3.5% restocking fee applies to all canceled or returned orders to cover non-refundable payment processing fees.
- Items must be returned in original condition with all packaging materials included. For guitars and basses, that means protective plastic must still be intact on pickups and pickguards; all accessories, case candy, and paperwork must be included; original box and packing materials must be returned.
- We reserve the right to refuse returns or charge an additional restocking fee if items are not returned in original condition.
All Sales Final
We do not accept returns on the following:
- In-store purchases
- Local Pickup Orders (Buy Online / Phone)
- Layaway sales and payments
- Closeout or clearance items
- Purchases involving trades
- Instruments modified at the time of sale or after (example: strap button or pickup installation)
- Amps, Pedals & Electronics. Due to the nature of electronic products, we do not accept returns on amplifiers, pedals, or other electronic gear. If your item appears defective out of the box, contact us immediately — we’ll work with you and the manufacturer on a warranty resolution.
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Description
This Sushi Box FX Underground Accelerator is in EXCELLENT overall condition. Cosmetically, it is very clean, only showing some very light wear. This is a used item, so it may have minor scratching and minor wear. Any significant marks will be mentioned in the description.
~Item pictured is the actual one that you will receive~
The Underground Accelerator answers the question “what preamp should I use if I don’t know what preamp I should use?” It takes inspiration from legendary studio tube preamps, but with some tweaks to make it more flexible. The goal of the design was to get something that sounds good with little to no effort and is flexible enough to sit well in any situation with minor tweaking to a flexible EQ. Underground Accelerator has a moderate amount of gain so it is capable of overdriving when the gain is turned up, or you could keep the gain rolled way back for a nice fat clean, or you could go somewhere in the middle for a tasteful gritty clean. In addition to the familiar 3-band EQ, Underground Accelerator has an EQ bypass switch, which removes the EQ from the circuit and affords you an extra +30dB of gain. This can be ideal when you have an EQ somewhere else in your chain and just want some extra level on the output. Bass is where Underground Accelerator really shines, providing the rich bottom end missing in so many bass pedals, but it has also become a popular staple with guitarists, as it pairs well with an IR loader for a compact and convenient ampless rig to run direct.
This Pedal Measures 4.8” x 2.64” x 1.58” and consumes 400mA
Note: Comes with black barefoot button and the original box. After close inspection, this item is free of any major wear, marks and/or blemishes.
All sales are final. No returns will be accepted unless the item shipped was incorrect or if that it was damaged in shipping.






