ACW-2540
| Brand | Heath, Heathkit |
| Manufacturer | Heath Company, Zenith, Harman/Kardon |
| Function | Tape Machine |
| Produced | 1988 |
| Model ID | AC-2540 |
| Form Factor | Standard Width |
| Signal Path | Analog Hardware |
| Dimensions | 44.5 × 12.1 × 26 cm (W × H × D) |
| Weight | 12lbs (Shipped) |
| Frequency Response | 20Hz-20kHz ±3dB |
| THD | 1.0% |
| SNR | 57dB |
| SNR (Dolby B) | 65dB |
| SNR (Dolby C) | 73dB |
| Noise Reduction | Dolby HX Professional |
| Channel Separation | 45dB |
| Wow & Flutter | 0.05%WRMS |
| Line Input Sensitivity | 50mV |
| Output Level | 580mV |
| Load Impedance | 10kΩ |
| MSRP (1989) | $349.00 |
| Channels | 2 Channel |
| Notes | Rebadged Harman Kardon HD400 Front labeled AC-2540 |