DSP-7500

● The powerful driving force of the DSP-7500 comes from the M-DSP, a high-performance DSP chip custom-built for professional audio processing with formidable processing power. Regarded as a flagship audio DSP chip, it delivers robust performance to effortlessly handle high-precision and highly complex DSP calculations.

● For timbre tuning, our proprietary design adjusts the system timbre by controlling the center frequency of data transmission, enabling sound engineers to calibrate the audio system for optimal performance.

● DEL (Dual Engine Limiter): Each output channel is equipped with dual-engine limiting. Powered by our proprietary algorithm, it delivers robust system protection with minimal distortion to safeguard loudspeaker equipment to the greatest extent.

● Professional vocal effect processing enhances vocal expressiveness. Echo and reverb effects mask imperfections in vocal timbre, pitch and breath control, delivering a richer, layered sound compared with dry signals. This allows vocalists to sing with ease while listeners enjoy a comfortable audio experience. Adjustable-slope high-pass and low-pass filters help sound engineers craft desirable vocal effects.

● The outstanding audio performance is largely attributed to the latest ESS AD/DA converter chipset. Combined with optimized DSP algorithms and superior hardware design, the VK3 achieves ultra-low THD+N (Total Harmonic Distortion plus Noise). It faithfully reproduces abundant details of incoming audio signals for near-perfect signal reconstruction and an upgraded listening experience.

● 64-bit calculation precision, 0.38 ms system latency: 64-bit high-precision calculation preserves high fidelity and signal authenticity during audio processing. Thanks to refined hardware and software design, the VK3 pushes the latency of digital audio processors to an extremely low 0.38 ms, setting a new industry benchmark.

● Intuitive PC control software: Supports device control via USB (driver-free), RS232, Wi-Fi or wired network. Users can easily adjust device parameters and monitor input & output audio signal levels as well as limiter status in real time. It innovatively integrates RTA (Real-Time Audio Analysis) to assist sound engineers in quickly and accurately tuning the desired sound for an exceptional workflow experience.

Key Features

● Music Input: 2 pairs of RCA stereo analog inputs

● Microphone Input: 3 channels of TRS analog inputs

● Audio Output: 6 channels of XLR analog outputs; independent RCA analog output for lighting control music signal; independent RCA analog output for karaoke microphone speech signal

● Music Input Processing: High-pass filter, 7-band parametric EQ

● Microphone Input Processing: 10-stage noise gate, frequency shifting, high-pass filter, low-pass filter with slope from 6 dB to 12 dB/Oct, compressor and 15-band parametric EQ

● Vocal Effects: Echo, Reverb

● Output Processing: Dual-engine limiter, mixer, high-pass & low-pass filters with slope from 6 dB to 48 dB/Oct, delay (up to 80 ms), 9-band parametric EQ                                           Specifications

Music Input: 2 pairs of analog stereo RCA terminals (selectable 1 out of 2)

Max Level: +14dBu

Input Impedance: 24kΩ

Microphone Input: 3 × Analog TRS terminals

Max Level: -7.5dBu

Max Gain: Analog 22dB / Digital 11dB

Input Impedance: 50kΩ (Unbalanced)

Analog Output: 6 × XLR terminals

Max Output Level: +14dBu

Source Impedance: < 50Ω

Frequency Response: 20–20kHz

Dynamic Range / S/N Ratio: 106dB (A-weighted)

THD+N: 0.0048% (Music Input: 0dBu @1kHz); 0.0063% (Mic Input: -22dBu @1kHz)

Latency: 0.38ms (Analog In to Analog Out @48kHz)

Power Supply: 220VAC ±10%, 20W

Dimensions: 44 × 420 × 178mm (1U)

Weight: 2.5kg (Net), 3.1kg (Gross)