SPL Phonos Duo

The SPL Phonos duo is the next-generation analog RIAA phono preamplifier designed for serious vinyl enthusiasts and audiophiles who demand superior flexibility and sonic purity. Building on the award-winning Phonos, the Phonos duo adds dual stereo input pairs (RCA + XLR), switchable impedance and capacitance for precise MM/MC cartridge matching, and SPL’s world-renowned VOLTAiR 120V technology for stunning dynamic range and clarity.

Whether you're spinning rare mono records or pristine audiophile pressings, the Phonos duo brings every detail to life—quietly, powerfully, and with unmatched musicality.

Key Features

• Dual Stereo Inputs and Outputs: Balanced XLR and unbalanced RCA connectivity.

• Supports MM and MC Cartridges: Fully adjustable for both moving magnet and moving coil types.

• Adjustable Capacitance (MM): 12, 47, 100, 150, 220, and 330 pF for accurate frequency alignment.

• Adjustable Impedance (MC): 20, 50, 100, 220, 500, and 1000 ohms for ideal cartridge loading.

• Gain Selection Switch: Three gain levels—Low, Medium, High—for both MM and MC operation.

• Subsonic Filter: Switchable rumble filter reduces low-frequency turntable noise.

• Mono Mode: Switch to mono for authentic playback of vintage mono records.

• Mute Function: Instantly silence the output with a front-panel mute button.

• Ground Lift: Rear panel GND lift switch to eliminate hum from ground loops.

• Banana Plug Ground Terminal: Securely connect turntable ground wires.

• VOLTAiR 120V Technology: Industry-leading dynamic range, headroom, and ultra-low noise.

Analog Purity, Redefined

The Phonos duo maintains SPL’s commitment to analog excellence. Thanks to its internal linear power supply and 120V VOLTAiR rail design, the Phonos duo operates far beyond conventional phono stages in both performance and sonic detail. It handles even the most demanding MC cartridges with ultra-low noise and precision, delivering a dynamic, punchy, and transparent sound.

Precision Cartridge Matching

Phonos duo provides true flexibility for any cartridge:

• MM Cartridges: Capacitance settings tailor the load to your cartridge spec for optimal frequency response.

• MC Cartridges: Impedance settings ensure proper loading for ultra-low output MC carts.

This level of precision means you'll hear your records as the artist and engineer intended—every nuance, every harmonic.

Professional Features for Serious Listening

• Balanced & Unbalanced Outputs: Both XLR and RCA outputs are always active for simultaneous connection to multiple devices.

• High Output Gain: Up to +70 dB for MC systems—ideal for modern digital converters.

• Douglas Self RIAA Design: Uses multiple smaller-value capacitors for faster charge/discharge response, better transients, and audiophile resolution.

Technical Specifications

Inputs/Outputs

• Input Types: Balanced XLR, Unbalanced RCA

• Output Types: Balanced XLR, Unbalanced RCA (simultaneous)

• Input Impedance (MM): 47 kΩ

• Input Impedance (MC): 20, 50, 100, 220, 500, 1000 Ω (switchable)

• Output Impedance: 75 Ω

• Frequency Range: 10 Hz – 100 kHz

• Crosstalk: -80 dBu

Amplification & Settings

• MM Gain: +30 dB (Low), +40 dB (Med), +50 dB (High)

• MC Gain: +50 dB (Low), +60 dB (Med), +70 dB (High)

• MM Capacitance Options: 12 / 47 / 100 / 150 / 220 / 330 pF

• Subsonic Filter: Switchable

• Mono Mode: Switchable

• Mute Function: Yes

• Ground Lift: Yes

Performance

• Noise (MM, 50 dB Gain): -82 dBu (A-weighted)

• Dynamic Range (MM): 132 dB

• Noise (MC, 70 dB Gain): -62 dBu (A-weighted)

• Dynamic Range (MC): 129 dB

Power

• Operating Voltage (Analog Audio): ±60 V

• Operating Voltage (Relays/LEDs): +12 V

• Power Supply: Internal Linear PSU with Toroidal Transformer

• Selectable Mains Voltage: 115V / 230V AC

• Power Consumption: Max 30 VA / Standby < 0.3 W

• Fuses: 230 V = T 0.5 A, 115 V = T 1 A

Dimensions & Weight

• Size (W x H x D): 278 x 57 x 300 mm / 11 x 2.24 x 11.81 in

• Unit Weight: 3.3 kg / 7.27 lbs

• Shipping Weight: 4.45 kg / 9.81 lbs

Available Colors & SKUs

• Black – SKU: 2450 – GTIN: 4260149320322

• Silver – SKU: 2451 – GTIN: 4260149320537

• Red – SKU: 2454 – GTIN: 4260149320544