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 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.

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

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.

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

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