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ISP Technologies Stealth Ultra-Lite 180-watt Pedalboard Power Amp , $332.00 - Add to Cart Skip to Product Information

ISP Technologies Stealth Ultra-Lite 180-watt Pedalboard Power Amp

180W Peak/90W RMS Guitar Power Amplifier with Volume, Bass, and Treble Controls
Item ID: StealthAmpUL
ISP Technologies Stealth Ultra-Lite 180-watt Pedalboard Power Amp
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ISP Technologies Stealth Ultra-Lite 180-watt Pedalboard Power Amp
In Stock!

Only 7 left in stock! More on the way.

Enough Analog Power to Hang with a Drummer

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Our Product Research Team

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Now it's possible to come by real analog gain and saturation from a pedalboard-sized guitar amp! The ISP Technologies Stealth Ultra-Lite is a Class AB amp/preamp with 90W RMS of gain (180W peak) to drive even a power-hungry 4x12". Enjoy the high headroom and let your pedals season your sound, or drive the input for glorious analog-colored breakup. The Stealth Ultra-Lite is so efficient that it rivals Class D amps in its class, saving your back for the long sets and your expensive half-stack for the studio.

Note: This device is intended to drive a speaker cabinet and should not be placed in front of an amplifier or pedals.

Lightweight and powerful

We love our big amps for the studio, where the scrutiny of the mics and the energy of the performance will live on forever. But for stage use, the ISP Stealth Ultra-Lite prolongs the life of your prized gear and saves you the time and hassle of hauling it.

All-analog signal path

Don't let the Stealth Ultra-Lite hear you call it sterile. This Class AB power amp with tone-shaping preamp section will give life to your pedalboard in a way that only true analog juice can, without the unnecessary weight and risk of hauling your pricey tube amp around town.

Perfect for pedalists

If you're like Sweetwater guitarists, you've spent a lot of time and money getting your signal right on your board— your pedals and power distribution are dialed in, and your tone is on fleek. So why risk coloring your sound with 50 lbs of tubes and circuitry just to get stage volume? The pint-sized ISP Stealth Ultra-Lite gives you a blank canvas for your pedalboard along with plenty of juice to be heard.

Upgraded with preamp and EQ

The Stealth Ultra-Lite sees a number of improvements over of the original Stealth. For starters, its built-in 12dB preamp means it's ready for guitar-level signals straight away, and particularly voiced for pedals. Another improvement is the 2-band EQ section, which offers 10dB of cut or boost in the bass and treble registers to compensate for stubborn speaker cabinets.

ISP Technologies Stealth Ultra-Lite Guitar Amplifier Features:

  • Portable amp for your pedalboard
  • Measures just 5" x 4"
  • All you need to drive a speaker cabinet
  • Enough power to hang with a drummer
  • 90W RMS (180W peak) of all-analog, Class AB power
  • 12dB preamp is ready for guitar-level signals
  • High headroom — great for pedals
  • True analog breakup when you drive the input
  • Bass and Treble EQs tame stubborn cabs with 10dB of cut or gain
  • Delayed power-up — eliminates pops

Warranty Info

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Offer applies only to single-receipt qualifying purchases. Select manufacturers may require that only the manufacturer’s products qualify towards the minimum purchase amount needed to be eligible for promotional financing. Otherwise, an invoice that meets the minimum purchase amount and contains at least one qualifying manufacturer product is eligible for promotional financing. No interest will be charged on promo purchase balance, and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the amount financed divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months’ rounding. Regular account terms apply to non-promo purchases. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

The estimated required monthly payment shown which excludes taxes and delivery equals the amount financed divided by the number of months in the promo period, rounded up to the next cent. During the last month(s) of the promo period the required monthly payment may be reduced due to this rounding. These payments apply only with the financing offer shown. If you make these payments by the due date each month, you should pay off this amount financed within the promo period, if it is the only balance you are paying off. If you have other balances on your account, this payment will be added to any other minimum monthly payments.

Applies only to select items from this manufacturer. Ask your Sweetwater Sales Engineer for more details.