A, B, C: What Used Audio Condition Grades Actually Mean
Most used gear listings say 'excellent condition' and nothing else. Here is the grading system we use, what each grade costs you in practice, and when grade C is the smarter purchase.
Overview
A touring workhorse with Lake processing built in, so it can drive a whole small system without a separate processor. Grade C: heavy rack wear, one channel shows lower gain and has been compensated in the preset. Priced accordingly.
Specifications
| Brand | Lab.gruppen |
|---|---|
| Model | PLM 20K44 |
| Category | Amplifier |
| Condition | Grade C |
| Channels | 4 |
| Power | 4 x 5000 W at 4 ohms |
| Processing | Lake LM 44 DSP built in |
| Weight | 18 kg |
| Tested | All channels loaded, Lake presets verified |
| Test report | Included with every quote · 48h turnaround on request |
Related guides
How to Test a Used Power Amplifier Without a Lab
Four measurements and one listening test that will tell you whether a used amplifier is healthy, using a multimeter, a dummy load and thirty minutes.
Frequently asked questions
What does grade C mean on this Lab.gruppen PLM 20K44?
Grade C means 50-70% cosmetic condition, often with a documented repair or visible wear. The test report describes exactly what was measured.
Can you ship this unit to my country?
Yes. We export from Guangzhou / Shenzhen, China by sea or air freight and can quote CIF to your nearest port. Send us the destination port and quantity for a landed-cost estimate.
Can I see a test video before paying?
Yes. Ask for it when you enquire and we will record a sweep or play test with the serial number visible, usually within 48 hours.