RTB11 mini low pressure mixed sound system headphone amplifiers

Introduction

http://www.siliconray.com/mini-6n11-low-voltage-hybrid-hifi-headphone-amplifier.html

RTB11 mini low pressure mixed sound system headphone amplifiers

RTB11 is a miniature hybrid Hifi headphone amplifier working with only 24V power supply. The design is very simple and unique. RTB11 uses 6N11 as input stage and IRF630 as output stage.
Features
- In Put Power: DC24V 500mA
- Input Sensitivity:50mV
- Input Impedance: 100KOhm
- Out-Put Impedance:32~600 Ohm
- Dynamic range: 84.6dBA((300 ohm) 89.8dBA(33 ohm)
- Gain:20dB
- Frequency response:10Hz-60KHz +/- 0.25dB
- Minimum THD: 0.016%(300 ohm) 0.45%(13 ohm)
- Signal/Noise Ratio >90dB
- RCA 2CH Input X1
- 6.3mm 2CH Output X1, 3.5mm 2Ch output x 1
- Dimension:95mm (D) X 90mm (W) X 32mm (H)