Original Audio OPA-Q1.1: RIAA phono amplifier with an original design

Original Audio offers the OPA-Q1.1 , an RIAA phono amplifier with an original design featuring a striking cylindrical format cut from a solid block of aluminum. However, its characteristics do not fade into the background, offering excellent...

Original Audio OPA-Q1.1
Original Audio OPA-Q1.1

Original Audio offers the OPA-Q1.1 , an RIAA phono amplifier with an original design featuring a striking cylindrical format cut from a solid block of aluminum. However, its characteristics do not fade into the background, offering excellent musicality. Its circuitry uses a dual field tube as well as an AOP for the MM/MC gain section, and its RIAA curve is Non-Feedback.

Original Audio OPA-Q1.1

The OPA-Q1.1’s amplification stage is also neat, using a Z11 Iron Core transformer specifically designed for this model.

Original Audio OPA-Q1.1

In terms of connectivity, the OPA-Q1.1 provides a classic connection, of course with stereo RCA input and output. However, it also offers an optical Toslink digital output coupled to a CS8604 ADC (analog to digital converter) supporting sampling rates up to 24-bit 96kHz PCM.

Original Audio OPA-Q1.1

Characteristics of Original Audio OPA-Q1.1:

  • Product Type: MM/MC Phono Preamplifier
  • Input: 1x stereo RCA
  • Outputs: 1x stereo RCA/1x optical Toslink
  • ADC chip: CS8604
  • Input impedance: MM : 51k Ohm/MC : 100 Ohm
  • Voltage Gain (1KHz): MM: 40dB/MS: 60dB
  • SNR: MM: 85dB/MC: 78dB
  • RIAA Bandwidth: 20Hz-20kHz, 0.25dB
  • THD: 0.008% (1 kHz)
  • Output sampling rates (optical): PCM up to 24bit 96kHz
  • Power: 220 V 50 Hz
  • Dimensions: 120 x 995 x 315 mm
  • Weight: 2 kg
  • Color: Silver and Black
  • Housing: Aluminum / Plastic