Signal Projects Alpha Digital RCA

Reference Series · 75Ω Coaxial · High-Purity Copper Conductor

The Signal Projects Alpha Digital RCA is Signal Projects' entry-level Reference Series 75Ω digital coaxial cable, designed specifically for S/PDIF digital transmission. Although positioned as an entry-level product, it embodies the craftsmanship spirit of a flagship. It features a 99.9997% high-purity multi-strand copper conductor with a double-shielding structure, effectively reducing jitter and interference, bringing clearer, more stable, and more musical digital signal transmission to your system.

Suitable for connecting digital devices such as CD transports, streamers, and DACs.

Basic Product Information

• Type: 75Ω Digital Coaxial Interconnect
• Brand: Signal Projects
• Series: Alpha (Entry-level of Reference Series)
• Connector: RCA
• Impedance: 75Ω
• Standard Length: 1 m (extendable)
• Positioning: Interconnect for upgrading entry to mid-range digital systems

Core Technology and Material Application

• High-Purity Copper Conductor: Uses 99.9997% Oxygen-Free Copper (OFC) for excellent conductivity and low distortion.
• Multi-core Structure: Enhances transmission stability and anti-interference capability.
• Precise 75Ω Impedance Design: Conforms to S/PDIF digital transmission standards, reducing signal reflection and jitter.
• Double Shielding Design: Aluminum foil + copper braided mesh effectively suppresses electromagnetic interference (EMI) and radio frequency interference (RFI).
• Low LCR Values: Well-controlled capacitance, resistance, and inductance maintain digital signal integrity.
• Purpose of Material Application: Centered on high-purity copper, emphasizing clear, stable, and natural digital transmission, reducing the impact of digital noise on sound.

Detailed Specifications

• Model: Alpha Digital RCA (75Ω)
• Conductor Type: Multi-core
• Cross-sectional Area: Approx. 0.84–0.90 mm²
• Metal: Copper
• Purity: 99.9997%
• Capacitance: Approx. 33–35.7 pF/ft
• Resistance: Approx. 8.7–9.0 mΩ/ft
• Inductance: Approx. 0.59–0.62 μH/ft
• Impedance: 75Ω
• Shielding: Aluminum foil + copper braid
• Standard Length: 1 m (additional charge for every 0.5 m increase)
• Applicable Systems: CD transports, streamers, DACs, and other digital devices

Sound Performance and Characteristics

The Signal Projects Alpha Digital RCA digital interconnect can bring the following enhancements to your system:

• More stable digital signal transmission, reduced jitter
• Quieter background, details emerge more easily
• Clear sound, ample energy
• High overall balance, non-intrusive character
• Crisp and bright highs, with a suitable sweetness
• Natural and lively mids, beautiful instrument and vocal performance
• Full and solid bass, moderate thickness with good focus
• Suitable for long listening sessions, not fatiguing

It is especially suitable as the first high-quality digital interconnect upgrade for your system, helping your DAC and source unleash their full potential.

Online Reviews

• Audio media and users praise the Alpha series as having "entry-level positioning with flagship spirit," offering stable sound, high energy, and excellent balance.
• Reviews note its stable digital transmission and good noise suppression, enhancing overall clarity and musicality, making it a very cost-effective digital interconnect choice.
• Considered suitable for users seeking a clear, full-bodied, and non-aggressive sound.