| Technical manuals: |
|
| Item | Description | Pages | Size |
|---|---|---|---|
| Leaflet | Stern Model HF-TR3 (complete tape amplifier).pdf | 2 | 5.08 MB |
| Leaflet | Stern Model HF-TR3 Mk II (complete tape amplifier).pdf | 2 | 3.84 MB |
| Manual | Stern's Tape Amplifier Model HF-TR3 (MkII).pdf | 41 | 2.95 MB |
| Mullard | Mullard design (Three Watt Tape Amplifier).pdf | 18 | 4.97 MB |
| Manual | Sterns Tape Pre-Amplifier type C.pdf | 37 | 3.02 MB |
| Mullard | Mullard design (Tape pre-amplifier).pdf | 13 | 3.54 MB |