CSPort Monaural Power Amplifier 212PAM2 真空管單聲道後級擴大機，採用德國電信開發之高可靠度 C3g 真空管，及 Western Electric 於 1910 年代開發的大型三極真空管212SE，1400V 電壓、40W 輸出功率，足以應付一般低效率喇叭。
無回授技術、高保真輸入變壓器、電源調節管控、平衡輸入等設計，在抑制失真、提升整體和諧、機體耐用度上，皆有非凡表現，實現 CSPort 致力追求的高音質境界。
Specification
| Model | 212PAM2-ST / 212PAM2-JH |
| Type | Class-A Vacuum tube monaural power amplifier |
| Output Power | 40 W (4 Ω, 8 Ω) |
| Frequency Response | 20-40 kHz -3 dB/20 W |
| THD | 1%/40 W 1 kHz, 0.2%/10 W 1kHz |
| NFB | None |
| Signal to Noise Ratio | 90 dB/10 W (8 Ω) |
| Input Sensitivity | 1 V/40 W |
| Gain | 25 dB (8 Ω) |
| Input Terminal | Balanced x1, Unbalanced x1 |
| Input Impedance | 1.5 kΩ |
| Volume Adjustment | None |
| Dumping Factor | 5 or more |
| Power Supply | AC100/120/200/240 V, 50/60 Hz |
| Power Consumption | 400 W |
| Dimensions | 188W×385H×563D mm * |
| Weight | 24.5 kg |
| Finishing | Anodic oxide coating, Rosewood plates |
| Accessories | AC cords |
| Warranty Period | 5 years(Excluding consumables) |
* Knobs and terminals are not included.
- The input impedance of this unit is 1.5 kΩ. Please use a equipment with an output impedance of 300 Ω or less.
- Two models are available: STC 4212E (model: 212PAM2-ST) and Jinzhou Electronics 212E (model: 212PAM2-JH).
- The 4212E made by STC is a rare item, so please contact us for availability.
- Do not touch the vacuum tube as it is hot and may cause burns.
- Vacuum tubes are treated as consumables and are not covered by warranty.
- Product appearance and specifications are subject to change without notice.
