TEAC HA-501不仅采用好音质保证的A类线路设计，内部以双单声道（Dual Mono）组成的平衡架构更是耳放产品中少见的设计，不仅可减少内部零件的交互干扰，更可大幅增加音场再生与左右声道的分离度。并使用了Muses 8920的OP放大器。
除此之外，HA-501共有五段可调式阻尼设计，包括at32、at64、at120、at300，以及at600欧姆。内部也以一颗大型的环形变压器给予最纯净的电源供应。整机采用高强度的全金属机箱，两侧侧板则是铝材。
Audio Input | |
| Balanced Input (Rear) | 1 pair |
Connectors | XLR-3-31 (1:GND, 2:HOT, 3:COLD) |
Impedance | 20k ohms |
Sensitivity | 2Vrms |
Line Input (Rear) | 2 pairs （LINE1, LINE2） |
Connectors | RCA Pin Jack (Gold-plated) |
Impedance | 10k ohms |
Sensitivity | 1Vrms |
Auxiliary Input (Front, AUX) | |
| Connectors | 1/8" (3.5mm) Stereo Mini Jack |
Impedance | 13k ohms |
Sensitivity | 0.5Vrms |
Audio Output | |
| Headphone Output (Front) | |
| Connectors | 1/4" (6.35mm) Stereo Jack |
Supported Headphone Impedance | 16 ohms - 600 ohms |
Max Output Level | 1,400mW + 1,400mW (at 32 ohms)
135mW + 135mW (at 600 ohms) |
Rated Output Level | 600mW + 600mW (at 32 ohms)
34mW + 34mW (at 600 ohms) |
THD | 0.002% (Input 1V, Output 1V, at 32 ohms)
0.01% (Input 1V, Output 600mW, at 32 ohms) |
S/N Ratio | 110dB (RCA Input, 2Vrms 1kHz, A-weighted) |
Frequency Response | 2Hz – 100kHz (+0dB/-3dB)
10Hz – 100kHz (+/-3dB) |
Line Output (Rear) | |
| Connectors | RCA Pin Jack (Gold-plated) |
Impedance | 100 ohms |
Output Level | 316mV |
Output Level Selector | Fixed, Variable, Off |
Operation Power | 120V AC, 60Hz (US/Canada)
230V AC 50Hz (UK/Europe) |
Power Consumption | 22W (Standby: 0W) |
Operating Temerature | +5C to +35C
+41F to +95F |
Operating Humidity | 5% to 85% (no condensation) |
Storage Temerature | -20C to +55C
-4F to +131C |
Overall Dimensions | 290 (W) x 81.2 (H) x 244 (D) mm, 11.4" (W) x 3.2" (H) x 9.6" (D) |
Net Weight | 4.1kg, 9 lbs |
Accessories | AC Cable, AC Plug Adapter (3P-2P), Owner's Manual, Warranty Card |
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