Accuphase DF-75 Digital Frequency Dividing Network

Product Description

The Accuphase DF-75 Digital Frequency Dividing Network is a reference-grade digital crossover designed for audiophiles seeking unparalleled control over multi-amplifier hi-fi systems. Featuring advanced DSP-based channel division, up to four-way crossover configurations, and ultra-low noise A/D and D/A conversion, the DF-75 delivers precise, transparent sound with exceptional dynamics. Its champagne gold panel, backlit display, and meticulous Japanese craftsmanship make it a luxurious addition to high-end audio setups. With customizable crossover frequencies, slopes, and time alignment, the DF-75 optimizes speaker performance, ensuring seamless integration and a breathtaking soundstage for the most discerning listeners.  

Key Features  

• Advanced DSP Crossover: High-speed 40-bit floating-point DSP enables precise channel division for one to four-way systems, with 59 crossover frequency points from 31.5 Hz to 20 kHz.  
  
• Flexible Crossover Slopes: Offers seven slope options (6, 12, 18, 24, 36, 48, 96 dB/octave) with Bessel and Linkwitz-Riley filters for tailored speaker integration. 
  
• High-Precision Conversion: 32-bit Hyperstream™ II DACs (ESS Technology) and 24-bit ΔΣ ADC ensure ultra-low noise and distortion for pristine signal processing.  
  
• Time Alignment: Adjustable delay up to 999.9 cm (0.1 cm steps) per channel aligns speaker drivers for coherent sound across frequencies.  
  
• Versatile Connectivity: Includes 2 coaxial, 2 optical, and 1 USB digital inputs; 4 balanced XLR and 4 unbalanced RCA analog outputs; plus HS-Link for high-resolution digital audio (up to 32-bit/384kHz PCM, DSD256).  
  
• Level and Phase Control: Independent output level adjustment (0.1 dB steps) and phase selection per channel ensure precise system tuning.  
  
• Memory Presets: Stores up to 10 setup patterns for quick recall of custom crossover, delay, and level settings.  
  
• Low Noise Design: Achieves a signal-to-noise ratio of 122 dB and total harmonic distortion of 0.0007%, ensuring transparent audio performance.  
  
• Elegant Design: Champagne gold panel, backlit LCD display, and persimmon wood side panels reflect Accuphase’s premium craftsmanship.  
  
• Handcrafted in Japan: Meticulous construction with premium components ensures reliability and sonic excellence.

Why Choose the Accuphase DF-75?

The DF-75 redefines multi-amplifier system performance, offering precise digital crossover control that optimizes speaker output with unmatched clarity. Its advanced DSP and high-resolution converters deliver a noise-free, dynamic soundstage, as praised in web sources for “taking multi-way systems to new heights.” Users on X highlight its flexibility and ease of use, with seamless integration into Accuphase setups like the C-3900 preamplifier and A-300 power amplifiers. While its specialized nature may limit its appeal to complex systems, the DF-75’s customizable filters, time alignment, and robust connectivity make it a future-proof investment for audiophiles seeking ultimate control and sonic precision in high-end hi-fi setups.  Product

Specifications  

• Digital Inputs: 2 coaxial (0.5 Vp-p/75 ohms), 2 optical (–27 to –15 dBm), 
• 1 USB (Type B, up to 32-bit/384kHz PCM, DSD256), 1 HS-Link  
  
• Analog Outputs: 4 balanced XLR (50 ohms), 4 unbalanced RCA (50 ohms)  
  
• Frequency Response: 2 Hz–120 kHz (+0, -3 dB)  
  
• Total Harmonic Distortion: 0.0007% (20 Hz–20 kHz)  
  
• Signal-to-Noise Ratio: 122 dB  
  
• Crossover Frequencies: 59 points (31.5 Hz–20 kHz)  
  
• Crossover Slopes: 6, 12, 18, 24, 36, 48, 96 dB/octave (Bessel/Linkwitz-Riley)  
  
• Delay Adjustment: 0–999.9 cm (0.1 cm steps) per channel  
  
• Power Consumption: 30W  
  
• Controls: Input selector, setup memory, crossover frequency/slope, delay, level, phase, 
• RC-250 remote included  
  
• Dimensions: 18.3" W x 5.9" H x 15.5" D (465 x 150 x 393 mm)  
  
• Weight: 34.2 lbs (15.5 kg)  
  
  

What’s Included  

• Accuphase DF-75 Digital Frequency Dividing Network  
  
• RC-250 remote control  
  
• Power cord  
  
• User manual

Perfect For  

• Audiophiles building multi-amplifier, multi-way speaker systems for high-end hi-fi  
  
• Accuphase system owners seeking precise crossover control with amplifiers like the A-300 or P-7500  
  
• Hi-fi enthusiasts needing flexible, high-resolution digital and analog integration