Used SRM-007tA STAX vacuum tube driver unit from JAPAN. This product data sheet is originally written in English.
There are some small scratches. Accessories: Japanese manual, power cable, original box.
A vacuum tube is mounted on the final stage. A high-grade driver dedicated to the stax headphone that adopted balance method amplification. Frequency response DC 100 kHz / + 0, -3 dB When using one SR-007. Rated input level 200 mV / 100 V output.
Maximum input level 30 V r. Amplification degree 54 dB (500 times). Harmonic distortion 0.01% or less / 1 kHz When using 100 V r.
/SR- 007 A or SR-404. Input impedance 50 KO / 50 KO when balanced × 2. Maximum output voltage 340 V r. Standard bias voltage PRO bias DC 580V.Power supply voltage AC 100 V ± 5%, 50 to 60 Hz (Voltage change can not be changed). Operating temperature range 0 to 35 ° C. External Dimensions (W) 195 x (H) 103 x (D) 420 mm Including VR knob and pin jack (20 + 10). The voltage for this electronic device is 100V and made for Japan usage ONLY. In order for you to use this device outside Japan where the voltage is higher than 100V such as 200V-240V, you are required to use a transformer to adjust the voltage to your local country.
WIthout using a transformer, this device will be broken. We are not responsible for the damage of this device if you use it without a proper transformer. Please let me know if you have any questions. Also, please tell me if you have what you're looking for in Japan items.International Buyers - Please Note. This item is in the category "Sound & Vision\Portable Audio & Headphones\Headphone Accessories". The seller is "japanderful" and is located in this country: JP. This item can be shipped worldwide.