Friedman Brit-50 50-watt Tube Head

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

180W Peak/90W RMS Guitar Power Amplifier with Volume, Bass, and Treble Controls
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Item ID: StealthAmpUL
ISP Technologies Stealth Ultra-Lite 180-watt Pedalboard Power Amp
Price:$332 and 00 cents
$56.00 suggested monthly payments with 6 month financing‡

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ISP Technologies Stealth Ultra-Lite 180-watt Pedalboard Power Amp
Backordered - More On The Way! Notify me
Price:$332 and 00 cents
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This article was Written By

Our Product Research Team

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Enough Analog Power to Hang with a Drummer

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

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Tech Specs

  • Type: Solid state power amp
  • Number of Channels: 1
  • Output Power: 90W RMS @ 4 ohms
  • EQ: 2-band EQ
  • Inputs: 1 x 1/4"
  • Outputs: 1 x 1/4"
  • Effects Loop: No
  • Power Source: 19V DC power supply (included)
  • Height: 1.73"
  • Width: 4.9"
  • Depth: 4.0"
  • Weight: 0.9 lbs.
  • Manufacturer Part Number: Stealth ULTRA-LITE

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Reviews

It's a solid power amplifier—reliable and definitely built to be a pedal-friendly platform
I've been using the ISP Stealth Ultra Lite for over five years, both live and in rehearsals. It's a solid power amplifier—reliable and definitely built to be a pedal-friendly platform. I've run it with my modelers as well as with the custom pedalboards I build, and it handles everything really well.

It's loud enough with an 8-ohm cab for bar gigs, and even better with a 4-ohm cab. The only downsides for me are that it doesn't have a power switch and it relies on an external power supply. Because of that, I'm giving it 4 stars.
Music background: 20 years of guitar
My secret weapon !
I bought the Stealth Ultra Lite recently to build a fly rig and to run with an Ampero stage ll live(tired of hauling around 50 lb heads) This thing is legit ! I read a lot of reviews on this unit and its competitors, seeing a handful of negative reviews about maybe not being loud enough to keep up with a drummer live especially for metal. That's totally wrong. The trick maybe playing through a 4 Ohm cab. It is Plenty!!! loud live, if the cab is mic'd or not. The other guitarist in the band runs a 5150 Iconic head and cab, no issues hanging with him, volume knob on Stealth at like 9:00, Really feels and sounds like I'm playing through a tube head. Super impressed with ISP and the Stealth. My secret weapon.
Music background: Working Musician
Amazing little amp
Recently got one of these to power my Tonex Pedal and Friedman IR-X. Run it into a single 12 EV ZW Black Label in a ported 1x12 cab. Wow is all I can say. Feels like a real tube amp.Very impressed and highly recommended to power a pedalboard rig.
Kicks you in the chest
Don't let the size of this product fool you. I use this as a power amp for my helix with either my 2x12 or 4x12. Loud enough to play with a drummer and play live. Great for the price.
Winner
This is a very efficient and powerful tiny power amp. I am currently using it to power a 1x12 to practice and barely crack the volume knob open before it gets too loud. I don't currently have a way to try it with a 4x12 and acoustic drums, but my hunch is that it will have no problems.

Some nice things:
- Tiny
- Passively cooled
- EQ
- Made in USA

ISP is awesome. Well done.