Περιγραφή
Head Box RS is a reference quality headphone amplifier with fully balanced tube input stage (double triode tube 6922) and single ended, class A „FET (Field Effect Transistor)“ output stage. It offers balanced and unbalanced input as well as balanced and unbalanced bypass connectors for using the pass-through input signal with other components.
Volume control consists of a precise volume regulator with matched resistance between left and right channel.
A special output impedance selector allows to adjust output impedance in three steps 5, 20 and 50 ohms to achieve better im-pedance matching between amplifier and headphones. Some experiments with different positions of output impedance selector are highly recommended to get the ultimate sound experience for your headphone.
An advanced multi-stage power supply with four different output voltages is used to achieve the best possible S/N ratio for out-standing reproduction of detail, dynamics and imaging with any dynamic headphone!
Features
- Fully balanced double mono design
- Tube input stage
- Class-A FET output stage
- Switchable output impedance for ultimate performance
- Superior low distortion
- Low noise components for ultimate dynamic & detail
- Output: 6.3mm socket
- Full metal casing in silver or black
- Optional Upgrade: Linear power supply Power Box RS Uni 1 (or 4) for further improved sound quality
Technical Specifications
| Power output | 350 mW at 32 ohms / 60 mW at 300 ohms |
| Crosstalk | – 58 dB |
| Frequency response | 30 Hz – 20 kHz /(+0,2 dB; -0,05 dB) |
| THD+N | 0.17% (XLR in, output impedance setting 5 ohm, load 32 ohm |
| Gain | 9 dB |
| S/N ratio | 99 dBA |
| Headphone jack | 3-pole ¼“ (6.3 mm ) co-axial jack |
| Line-level input | 1 pair RCA + 1 pair XLR |
| Line-level output | 1 pair RCA + 1 pair XLR |
| Outboard power supply | 20 V/3 A DC, suitable for your country’s mains supply |
| Power consumption | 1,3 A DC |
| Dimensions W x H x D | 206 x 72 x 200 (209) mm |
| Weight | 2150 g without power supply |
