Upgrade Your Car Audio with E46.4A DSP Amplifier!
✅ 4CH High-Level Input + Optical/USB/BT 5.1：Seamless connectivity for factory & aftermarket systems!
✅ CLASS AB Amplifier, Dual Impedance Power：25W×4@4Ω / 50W×4@2Ω, delivers deep bass without distortion.
✅ CIRRUS LOGIC 3-Core DSP Chip：24Bit/192KHz Hi-Res decoding, studio-grade sound quality!
✅ 31-Band EQ + 15ms Time Alignment：Perfect soundstage tuning for every seat in your car.
✅ Dual USB & Lossless Playback：Directly play FLAC/APE/WAV files via USB drive or smartphone.
✅ PC/iOS/Android Tuning Apps：User-friendly interface for pro-level audio customization.
✅ 9-16V Wide Voltage & 0.35A Standby：Energy-efficient design for all vehicles.
Perfect For：Car audio enthusiasts, Hi-Fi music lovers, and DIY upgraders.
| Specification | E46.4A |
| Input | 4 High Level/2 RCA/Optical/USB Audio/USB Disk/BT |
| Input Voltage(Max) | High Level4-10Vrms, RCA 0.5-2.5Vrms |
| Output | 4 High Level/6 RCA |
| Output Voltage (Max) | Amplifier output -10Vrms, RCA-2Vrms |
| Output Gain | Power Amplifier : 26dB |
| Optical In | Yes |
| Coaxial In | NA |
| Amplifier type | CLASS AB |
| Power Output | 25Wx4@4 Ω, 50WX4@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 | 20Hz- 20Khz |
| Q Value(Slope) | 0.5-9 |
| EQ Gain | -18.0dB +12.0dB |
| Filtering | Butter , Bessel, Link |
| Filtering Crossover point | 20Hz- 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 | 0.35A |
| Operating Voltage | 9-16V |
| Working Current Range | 0.5-10A |
| 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 | TFT |
| 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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