RIAA prepre's:
| Amplifier Name | Tubes amplifier | Tubes powersupply | Schematics |
|---|---|---|---|
| Dynaco Pas | ECC 83 (?) | NA | AMP(5k) |
| Dynaco Pas | ECC 83 (?) | NA | AMP(6k) |
| Green project enterprise | 12AX7 | NA | AMP(11k) |
| Harman-Kardon Citation I phono-part | 2*ECC 83 | NA | AMP(24k) |
| Harman-Kardon Citation IV phono-part | 1½ ECC 83 | NA | AMP(24k) |
| Hiraga | ??? | 5R4 | AMP(7k), PS(20k) |
| MachMat Schalmei I | 5751, 1LE3, 1G4GT | 5V4G, 85A2, 7F8, 6080, Tube regulated | AMP+PS |
| MachMat Schalmei III | 5703, 5676, DC70, subminiatures | battery powersupply | AMP+PS |
| Marantz 7C phono-part | 1½ 12AX7 | NA | AMP(9k) |
| Marantz 7C phono-part "stream-lined" | 1½ 12AX7 | NA | AMP(14k) |
| MachMat Schalmei | 5751, 1LE3, 1G4 | 5V4G, 85A2, 7F8, 6080, Tube regulated | AMP |
| Ohashi | ??? | NA | AMP(6k) |
| RCA | 12AX7 | NA | AMP(14k) |
| Siren Song 2 | 6SL7, 2*6SN7 | SS, 6AU8, 6080, tube regulated | AMP(10k), PS(10k) |
| Unknown | E180F/6688 | 6X4 | AMP+PS(39k) |
| Unknown MC prepre | 6J7, 6SN7 | NA | AMP+PS(21k) |
| Unknown | ECC88 | NA | AMP(9k) |
| Unknown | ??? | NA | AMP(8k) |
Pre-amplifiers:
| Amplifier Name | Tubes amplifier | Tubes powersupply | Schematics |
|---|---|---|---|
| Audionote M-10 | 3*6072 | 5AR4 | AMP+PS(41k) |
| Brimar VP10 | 2*ECC807 | NA | AMP(48k) |
| Curcio Danial | 6DJ8 | NA | AMP(7k) |
| Conrad Johnson PV-3 | ??? | SS | AMP+PS(26k) |
| Conrad Johnson PV-5a | ??? | SS | AMP+PS(49k) |
| Dynaco Pam | 2*12AX7 | NA | AMP(30k) |
| Dynaco Pas 2X, 3X | 12AX7 | 12X4 | AMP1(71k), AMP2(62k), Specs(29k) |
| Eico HF85 | 2½ ECC83 | 6X4 | AMP+PS(88k) |
| FVP5, super lineair cathode follower | ???, IRF830 (FET) | NA | AMP(49k) |
| Harman-Kardon Citation I line-part | 1½ ECC81 | NA | AMP(35k) |
| Harman-Kardon Citation IV line-part | 1½ ECC83 | NA | AMP(27k) |
| Leak RC/PA/U | ECC40 | NA | AMP(63k) |
| Leak Varislope slope (early issue in gold) | 2*EF86 | NA | AMP(121k) |
| Leak Varislope slope II (later issue in grey) | 2*EF86 | NA | AMP(53k) |
| MachMat Schalmei I | 3A/109A | 5V4G, 85A2, 7F8, 6080, Tube regulated | AMP+PS |
| MachMat Schalmei III | AV8B-SL | 5V4G, 85A2, OA2, 6SG7, 6080, Tube regulated | AMP+PS |
| Marantz 7C line-part "stream-lined" | 1½ 12AX7 | NA | AMP(11k) |
| Quad 2 preamp | EF86, ECC83 | NA | AMP(95k) |
| Unknown | 12AU7 | SS | AMP(6k), PS(11k) |
| Unknown | ECC82 | NA | AMP(16k) |
| Unknown | ½ ECC81, ½ ECC83, ½ 6DJ8 | NA | AMP(17k) |
