Description
Head Box RS is a reference quality headphone amplifier with a fully balanced tube input stage (double triode 6922 tube) and a single-ended Class A FET (field effect transistor) output stage. It offers each RCA & XLR (balanced) inputs as well as RCA & XLR outputs for pass-through. Volume control consists of a precise volume regulator with matched resistance between the left and right channels. An output impedance selector allows adjustment in 3 steps: 5, 20 and 50ohm for optimal headphone/amp impedance matching (determine by listening). An advanced multi-stage power supply with four different output voltages is used to achieve the best possible S/N ratio for outstanding 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 top performance
- Superior low distortion
- Low noise components for ultimate dynamic & detail
- Output: 6.3mm socket
- Full metal casing in silver or black
- Upgrade path: Power Box RS Uni 1 (or 4) for further improved sound quality
- Handmade in Europe
Specs
- Power output: 350mW at 32 ohms / 60mW at 300ohms
- Crosstalk: -58dB
- Frequency response: 20Hz – 20kHz/(+0,2dB; -0,05dB)
- THD+N: 0,17% (XLR in, output impedance setting 5 ohm, load 32 ohm)
- Gain: 9dB
- S/N ratio: 99dB
- Headphone jack: 3-pole ¼“ (6,3mm) co-axial jack
- Line-level input: 1 pair RCA + 1 pair XLR
- Line-level output: 1 pair RCA + 1 pair XLR
- Outboard power supply: 20V/3A DC, suitable for your country’s mains supply
- Power consumption: 1,3A DC