E48.4D CLASS D DSP Amplifier – High-Efficiency Powerhouse
✅ 4 High-Level + Coaxial/Optical/USB Inputs：Audiophile-grade digital signal transmission.
✅ CLASS D Dual Power Mode：50W×4@4Ω / 60W×4@2Ω, high-efficiency with minimal heat.
✅ CIRRUS LOGIC 3-Core DSP：24Bit/192KHz decoding for studio-level clarity.
✅ 31-Band EQ & 15ms Time Alignment：Pinpoint soundstage tuning for driver-focused audio.
✅ Bluetooth 5.1 & Dual USB Lossless：Play FLAC/APE directly via USB or wireless streaming.
✅ LCD Remote + 10 Presets：Cross-platform control (PC/iOS/Android) with instant switching.
✅ 9-16V Voltage & 0.45A Standby：Energy-saving design for all vehicle types.
Built For：Bass-heavy systems, digital source upgrades, and road trip enthusiasts.
| Specification | E48.4D |
| Input | 4High Level/2 RCA/Optical/Coaxial/USB Audio/USB Disk/BT |
| Input Voltage(Max) | High Level-4-10V,RCA-0.5-2.5V |
| Output | 4 High/8RCA |
| Output Voltage (Max) | Amplifier output -14Vrms, RCA-2Vrms |
| Output Gain | Power Amplifier :26 dB |
| Optical In | YES |
| Coaxial In | yes |
| Amplifier type | CLASS D |
| Power Output | 4x50W @ 4 Ω 4x60W @ 2 Ω |
| (AD & DA) Signal Conversion | CIRRUS LOGIC SMART HIFI 3-core DSP CS47L35，CS4344 |
| Sampling Rate | 24Bit/192KHz ADC/DAC |
| EQ/Delay | 31Band EQ/15ms |
| Frequency Range | 20-20kHz |
| Q Value(Slope) | 0.5-9 |
| EQ Gain | -18.0dB +12.0dB |
| Filtering | Butter , Bessel, Link |
| Filtering Crossover point | 20-20kHz |
| Filter slope | 6dB/oct -48dB/Oct |
| Phase | 0-180 |
| Time Alignment (delay) | 15ms |
| Preset | 10 |
| Frequency Response | 20-20kHz |
| Signal to Noise - RCA | 85dB |
| Signal to Noise - Power Amp | 87dB |
| Input Resistance | 20kΩ |
| Low level output Resistance | 680Ω |
| Static Current | 0.45A |
| Operating Voltage | 9-16V |
| Working Current Range | 0.5-18A |
| Temperature resistance | NA |
| Bluetooth | Yes |
| Bluetooth Version | 5.1 |
| USB Audio Built in | YES |
| USB DISK | mp3, wma,wav, m4a, aac and lossless format FLAC, APE |
| Remote(purchase separately) | LCD |
| PC Connection | yes |
| PC Software | yes |
| Android App | yes |
| IOS app | yes |
| Auto Tuning | NA |
| REM Input | 3.5V |
| REM Output | 0.1A |
| Over heat protection | NA |
| Over Load Protection | NA |
| Working Indicators | YES |
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