Brax DSP – Input Analog AKM – stereo RCA / high-level input module
This module is one of the analog input options for the modular BRAX DSP. It adds one stereo input pair, available both as RCA and as high-level (speaker-level) input, to the CORE Model. It is compatible only with the BRAX DSP CORE Model, is offered exclusively as part of its initial configuration and is installed at the factory in Germany.
On the conversion side it relies on the AKM AK5572EN, a 32-bit two-channel A/D converter with Asahi Kasei’s Velvet Sound technology, while the analog signal path is built around the Texas Instruments LME49720 dual high-performance op-amp. The input sensitivity is continuously adjustable so that the module can be matched precisely to the output voltage of the source unit.
Key Features
- Stereo input module: One stereo channel pair with both RCA and high-level inputs.
- Wide sensitivity range: Continuously adjustable: 1–8 V on RCA, 3.5–30 V on high-level.
- AKM AK5572EN A/D converter: 32-bit, 2-channel converter with Velvet Sound technology.
- TI LME49720 op-amp: Dual high-performance operational amplifier in the analog signal path.
- Four digital input filters: Software-configurable with selectable filter characteristics.
- ADEP.3 circuit: Integrated on the high-level input to reliably bypass radio diagnostic systems.
- Auto Turn-On: The DSP can be switched on automatically via the high-level input.
- 192 kHz operation: Sampling rate 192 kHz with a frequency response of 10 Hz – 80 kHz.
- Low noise and distortion: SNR 116 dB (A-weighted), THD+N below -104 dB (0.0006 %), IMD below -94 dB (0.002 %).
Inputs & Outputs
- 1 × stereo RCA input, sensitivity 1–8 V.
- 1 × stereo high-level input, sensitivity 3.5–30 V, with ADEP.3 and Auto Turn-On.
DSP & Sound Tuning
- Four software-configurable digital input filters with selectable characteristics.
- Conversion at 192 kHz using the AK5572EN 32-bit A/D converter.
Installation & Connectivity Notes
- Compatible only with the BRAX DSP CORE Model.
- Available exclusively as part of the initial CORE Model configuration; factory-installed in Germany.
Technical Specifications
| Signal converter | AKM AK5572EN |
| Operational amplifier | TI LME49720 Dual High Performance |
| Sampling rate | 192 kHz |
| Frequency response | 10 Hz – 80 kHz |
| Signal-to-noise ratio (A-weighted) | 116 dB |
| Total harmonic distortion (THD+N) | < -104 dB (0.0006 %) |
| IM distortion (IMD) | < -94 dB (0.002 %) |
| Input sensitivity | RCA / Cinch: 1 – 8 Volts Highlevel: 3.5 – 30 Volts |
Scope of Delivery
1 x analog input module with AKM converter
