The Dayton Audio DSP-408 is a feature-rich 4 input/8 output digital signal processor that was designed to give you the tools to contour your audio system to fit your tastes. This processor is the perfect addition to your home or car audio system. The DSP can be controlled via a Windows PC, Android device, or an iOS device. Unlike most mobile apps for DSPs, the DSP-408 app offers the user full control over the DSP features.
The DSP-408 is a 4‑channel high‑level and low‑level input digital signal processor with 8 RCA outputs, designed for home and car audio systems. It can be controlled via Windows PC software, an Android or iOS mobile app, and optionally a Bluetooth 4.0 dongle for wireless streaming.
The manual covers safety instructions, box contents, wiring diagrams, detailed software features such as parametric EQ, crossovers, time alignment, and preset management, as well as troubleshooting tips like adding a capacitor to prevent pop‑on‑power‑off.
| High‑level input impedance | 180 Ω |
|---|---|
| Maximum speaker input level | ≤ 8 V |
| RCA input impedance | ≥ 20 kΩ |
| Frequency response | 20 Hz – 20 kHz |
| THD+N | 0.008 % |
| Output impedance | < 50 Ω |
| Power adapter input voltage | 100‑240 VAC |
| Power adapter output | 12 VDC / 1.5 A |
| Dimensions (W × H × D) | 6.53" × 1.02" × 4.55" |
Install a capacitor inline with the tweeters to absorb the pop when the unit powers down.
The adapter accepts 100‑240 VAC input and provides a 12 VDC, 1.5 A output.
It has four RCA pre‑amp inputs and eight RCA pre‑amp outputs.
The DSP‑408 can be controlled with the Dayton Audio DSP Control app on Android and iOS devices.