Pricing and availability
We compare 600+ stores and found this item at 3 stores. Prices updated .
Store
Reviews
Price
Average Price: $698
Standard/Professional
$299
$800+
Price Tier
Budget
Standard
High-end
Price History
Based on price data from 1 merchant for "ISP Technologies Stealth Ultra-Lite Power Amp". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
* Product prices and availability are updated by Equipboard every 24hrs and are subject to change. Equipboard may receive compensation for purchases made at participating retailers linked on this site. This compensation does not affect what products or prices are displayed, or the order of prices listed. For more information, please refer to our affiliate disclosure.
Description
The ISP Technologies Stealth Ultra-Lite Power Amp redefines portability and performance for guitarists who want to carry less but sound like more. Designed to fit seamlessly onto your pedalboard, this Class AB powerhouse delivers 90W of RMS (180W peak) of rich analog sound that can drive a 4x12" cabinet without breaking a sweat. Whether you're looking to maintain pristine clarity or crave a vintage-style breakup, this amp offers a high headroom that pairs perfectly with your pedals, allowing you to sculpt your sound with precision.
Gone are the days of lugging around heavy amps just to achieve that stage-worthy sound. The Stealth Ultra-Lite is equipped with a built-in 12dB preamp, optimized for guitar-level signals, making it a versatile choice for both practice and performance. Its 2-band EQ section provides 10dB of cut or boost in the bass and treble frequencies, enabling you to tailor your tone to any venue or speaker cabinet.
Perfect for pedal enthusiasts, the Stealth Ultra-Lite ensures your carefully crafted signal chain remains untouched by unnecessary coloration, letting your pedals shine. With its lightweight and compact design, it's the ideal amp for musicians who need power and portability without compromising on sound quality.
Key Features:
- All-analog, Class AB power amp
- 90W RMS (180W peak) output
- Built-in 12dB preamp for guitar-level signals
- 2-band EQ with 10dB cut/boost in bass and treble
- High headroom, ideal for pedalboards
- Compact size for easy pedalboard integration
- Delayed power-up feature to prevent pops
Product 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. |
FAQs
-
What type of power supply does the ISP Technologies Stealth Ultra-Lite Power Amp require?
-
The ISP Technologies Stealth Ultra-Lite Power Amp requires a 19V DC power supply, which is included with the unit.
-
Is the ISP Stealth Ultra-Lite Power Amp suitable for gigging?
-
Yes, the ISP Stealth Ultra-Lite Power Amp is suitable for gigging, providing 90 watts of RMS power at 4 ohms, making it capable of handling live performance settings with adequate volume.
-
Does the ISP Stealth Ultra-Lite Power Amp have an effects loop?
-
No, the ISP Stealth Ultra-Lite Power Amp does not feature an effects loop.
-
How portable is the ISP Technologies Stealth Ultra-Lite Power Amp?
-
The ISP Technologies Stealth Ultra-Lite Power Amp is highly portable, weighing only 0.9 lbs and measuring 1.73 inches in height, 4.9 inches in width, and 4.0 inches in depth, making it easy to fit on a pedalboard.
-
Can the ISP Stealth Ultra-Lite Power Amp be used with any guitar cabinet?
-
The ISP Stealth Ultra-Lite Power Amp can be used with guitar cabinets rated at 4 ohms, providing flexibility in pairing with different speaker configurations.
Videos
Kaz Horie
FRYETTE Power Station vs ISP STEALTH ULTRA-Lite ~ GAC8~
Reviews
PROS
-
Compact size fits easily on pedalboard
-
Provides real tube amp feel and tone
-
Loud enough for live performances and band practice
-
Lightweight, only one pound
-
Passively cooled, no noisy fans
-
Useful EQ for tone shaping
-
Uncolored tone enhances existing gear
-
Made in the USA
-
Great value for the price
CONS
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about ISP Technologies Stealth Ultra-Lite Power Amp.
Comparisons
-
The Quilter Tone Block 202 is a strong contender for those seeking a compact, powerful option that can handle multiple cabs, contrasting with the bulkier Powerstage 700.
Source -
Users report that the ISP Stealth Ultra-Lite is a solid rehearsal and backup amp, with endorsements from industry figures like Dave Friedman.
Source
Features and functionality
-
The Blackstar Amped:1 includes a unique 1/20/100 watt switch, allowing users to maintain their settings while adjusting output for different environments, enhancing its versatility.
Source -
The ISP Stealth Ultra-Lite is noted for being class AB, but some speculate it's actually class H based on user experience and recommendations.
Source -
The ISP Stealth Ultra-Lite outputs 90 watts at 4 ohms, dropping to 50-60 watts at 8 ohms and 35-45 watts at 16 ohms.
Source -
The ISP Stealth Ultra-Lite lacks a bridging option to maximize output with an 8 ohm load, potentially limiting power output when using specific speaker configurations.
Source
Use cases and applications
-
The KSR PA-50, weighing only 12lbs, offers a lightweight tube power amp option, though its form factor may not be ideal for all pedalboards.
Source -
Running the ISP Stealth Ultra-Lite into an 8 ohm 412 cab with Eminence Legends, rated 120 watts each, may not achieve full wattage due to lack of bridging option.
Source
User experience
-
Despite being lightweight, the ISP Technologies Stealth Ultra-Lite may struggle to compete with the volume levels of a 100w tube amp in loud band settings.
Source -
One user finds the ISP Stealth Ultra-Lite reliable for rehearsals when paired with a 2x12 cab, providing ample volume and tight sound without the resonance of tube amps.
Source -
Some users find the ISP Stealth Ultra-Lite insufficient against a 5150 through a 1960a cab, suggesting speaker efficiency and preamp output significantly impact perceived volume.
Source
Critic Reviews
Based on 0 Reviews and 0 Ratings
More ISP Technologies Guitar Power Amplifiers
Accessories & Related Items
Artist usage
Community setups
Similar
Most Popular Guitar Power Amplifiers
Most Popular Brands
-
Added to Equipboard on by
equipboardGear IQ 4934
-