Dizengoff Audio DA2
Valve Microphone Preamp
Meet the Dizengoff Audio DA2. It’s a tribute to the venerable RCA BA2C tube preamp. RCA’s BA2C found wide use in film, broadcast, and recording during the 1950’s. I like to think of it as the “little brother” to the RCA OP6 because they use the same tube.
The DA2 has wonderful headroom, and it packs a nice low-mid wallop. The tone is smooth, warm, and sort of heavy–just what you’d expect from an American tube design of this era.
Signal transformers are wound right here in Chicago. The DA2 uses a hi-nickel input (80% nickel) and lo-nickel (45% nickel) for excellent fidelity. The transformers are based on early Peerless designs, and their frequency response is flat from 10Hz to 50kHz.
The power supply is internal. Like the D4 and D864, it’s built around a Japanese Nippo Steel R-core power transformer. It has extremely high efficiency and low noise compared with traditional E-I core transformers and plays a significant part in achieving the DA2’s low noise performance.
- 2U enclosure
- IEC power inlet
- XLR input and output
- DI input
- 0-52dB gain
- Analog VU meter
- 20dB pad
- +48v phantom power
- Phase reverse
- Transformer frequency response: 10Hz-50kHz, RCA’s original circuit frequency response 20Hz-20kHz
- THD+N at 1Khz: 1%,+4dBU, 10-24kHz bandwidth
- S/N -82dBA at maximum (+50dB) gain, 10-24kHz bandwidth