| Product # | 212715 |
| Brand | ISP Technologies |
| Category | Guitar Amplifier Head |
| Category | Guitar Power Amplifier |
| Brand Category | ISP Technologies - Heads |
Recommended accessories
- Input Impedance: 470k
- Output Power:
- 4Ω @ 10% THD = 180WPEAK = 90WRMS
- 4Ω @ 1% THD = 160WPEAK = 80WRMS
- 8Ω @ 10% THD = 120WPEAK = 60WRMS
- 8Ω @ 1% THD = 100WPEAK= 50WRMS
- 16Ω @ 10% THD = 62PEAK = 31WRMS
- Input Sensitivity/Max Output: -10dBu / .25vrms
- Maximum Input Signal: +17dBu
- Voltage Gain: 42dB
- Noise Floor: -80dBu
- Dynamic Range: 104db A WTD
- Distortion: @10dBu output=.02% Full Output=.1%
- Frequency Response: 20Hz – 20KHz = +0 / -.5dB
- Input Power: 80mA @idle 3A full power @4Ω
- Dimensions: 4.9” W x 1.75” H x 4” D
- Weight: .95 LBS
- Protection: Auto shutdown / Output shorts or low load impedance. Protected for open loads.
- Note: 0dbu = .775 vrms
| General Information | |
|---|---|
| Manufacturer information | MusiX GmbH
Schildgasse 12 79618 Rheinfelden (Baden) Germany manufacturerinfo@musix.com |
| Product Warranty | |
|---|---|
| Years | 3 |
| Product Details | |
|---|---|
| Product Number | 212715 |
| Brand | |
| Category | |
| Brand Category | |
| Relevancy rank in Category Guitar Amplifier Head | |
| Date | June 2025 |
| Dimension | |
|---|---|
| Weight | 0.4kg |
| Gross Weight | 1kg |
In my search for a weight-reduced alternative to my 100W tube amp (Metropoulos Metroplex), I purchased a ToneX One Modeler a few months ago. This allowed me to create captures of my beloved Metroplex, which are indistinguishable from the original on my computer. In my search for a pedalboard amp, I tried several well-known products, but none satisfied me. That's when I bought the ISP Stealth Ultra-Lite. I am completely satisfied with it. When comparing the Metroplex with the ToneX One/ISP Stealth, there is no discernible difference. The feel is exactly what you would expect from a tube amp – but with significantly lower volume levels. Last week, I used the ToneX One/ISP Stealth for the first time at a gig, and they performed flawlessly. I'm so impressed that I've already ordered a second ISP Stealth as a backup. If you can accept that the ISP Stealth doesn't have a power switch and that there's a crackling sound from the speakers when the entire pedalboard is turned off, and that the ToneX One loses power, I can highly recommend the ISP Stealth. Thank you, MusiX, for offering niche products that none of your competitors seem to have on their radar.






