ACCUPHASE DF-45

Pre owned. In excellent condition. No visible signs of wear. Original packaging not included.

The Accuphase DF‑45 digital crossover is a multi-channel divider designed for multi-amplifier systems, utilizing a high-speed 40-bit floating-point DSP to provide fully digital signal processing. The standard configuration supports four channels, allowing use in four-way systems with precise and flexible control over each audio path.

The unit offers 59 selectable cutoff frequency points, ensuring complete adaptability to the characteristics of the speakers and the requirements of the system. Highly accurate digital filters provide slopes of up to 96 dB per octave, ensuring clear separation between frequency bands and detailed, transparent sound reproduction.

The time alignment function allows adjustment of channel delays in 1 cm increments, while a delay compensator corrects any differences introduced by the filter circuits, ensuring exceptional spatial coherence and imaging accuracy.

The DF‑45 also features a further refined MDS++ D/A converter and supports digital inputs in combination with the DC‑330 player, offering compatibility with high-resolution formats such as SA‑CD via the HS-Link connection. Every detail of the design is intended to ensure fully digital signal management, allowing enthusiasts to achieve maximum fidelity and control in multi-channel audio reproduction.

Technical specifications:

• Digital inputs: COAXIAL JEITA CP-1201/AES3; OPTICAL JEITA CP-1201; Sampling frequencies 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz (16–24 bit, 2-channel PCM); Dedicated HS-Link RJ‑45 176.4 kHz, 192 kHz (24-bit, 2-channel PCM)
• Digital output: COAXIAL JEITA CP-1201, level 0.5 Vp-p, 75 Ω
• Frequency response: 2.0 – 44,000 Hz, +0 / –3 dB
• D/A converter: 24-bit MDS++
• THD: 0.001% (20 – 20,000 Hz)
• Signal-to-noise ratio: COAXIAL/OPTICAL 114 dB; HS-Link 116 dB; analog input 112 dB
• Dynamic range: “Analog ATT” OFF 112 dB; “Analog ATT” ON 109 dB
• Channel separation: 108 dB (20 – 20,000 Hz)
• Cutoff frequencies: 59 points
• Filter slopes: 6 dB/oct; 12 dB/oct; 18 dB/oct; 24 dB/oct; 48 dB/oct; 96 dB/oct (when cutoff frequency is 10 Hz or 20 Hz, only 6, 12, 18 dB/oct available)
• Delay adjustment range: 0 – 3000 cm (1 cm steps)
• Level adjustment range: “Analog ATT” OFF –40 to +12 dB (0.1 dB steps); “Analog ATT” ON –50 to +2 dB (0.1 dB steps)
• Output voltage/impedance: BALANCED 2.5 V, 50 Ω, XLR connector; UNBALANCED 2.5 V, 50 Ω, RCA connector
• Minimum load impedance: BALANCED 600 Ω; UNBALANCED 600 Ω
• Power supply: AC 120 V / 230 V, 50/60 Hz
• Power consumption: 36 W
• Dimensions (W × H × D): 465 × 150.6 × 395.8 mm
• Weight: 14.1 kg net