Components | Retro Radio Tech

Immersive Sound Quality: Experience crystal-clear audio with high-quality output and adjustable equalization for the ultimate listening pleasure.

Built to Last: Robust protection features safeguard against electrical issues, ensuring the longevity and reliability of your car audio system.

Seamless Integration: Effortlessly integrate our system with your vehicle's components, compatible with various tuning methods for a harmonious driving experience.

Intelligent Control: Advanced microprocessor and software deliver precise control and customization, with a user-friendly interface for easy operation.

Powerful Amplification: Drive a wide range of speaker configurations and optimize settings based on your speaker setup.

Extreme Weather Ready: Operate flawlessly in the harshest conditions, from freezing -40°F to scorching +149°F temperatures.

Voice-Guided Convenience: Enjoy hands-free control with Voice Assist HD, while automatic volume adjustment keeps your audio experience consistent.

Vintage Vibe: Tube Emulation Mode adds a touch of nostalgia, mimicking the warm-up time of classic tube radios.

Customizable Aesthetics: Choose optional features like RGB status LEDs and push-button controls to match your unique style.

Digital Radio Ready: Access the latest in radio technology with optional support for digital standards like HD Radio™ and DAB/DAB+.

Compact Design: The BTU-3.1 is an ultra-compact module with low power consumption, making it suitable for small form factor devices. Its dimensions are 1.44" x 1.5" x 0.44".

Bluetooth Compatibility: It is Bluetooth 5.0 certified and fully compatible with previous Bluetooth versions (3.0/2.1+EDR, 1.2, and 1.1).

Audio Profiles: Supports various Bluetooth audio profiles, including HFP (Hands-Free Profile), HSP (Headset Profile), A2DP (Advanced Audio Distribution Profile), and AVRCP (Audio/Video Remote Control Profile).

Audio Codecs: Supports high-quality AAC and standard Bluetooth SBC audio codecs.

Device Pairing: Automatically reconnects to the last 4 connected devices and supports pairing with up to 8 devices.

Phone Calls: Supports multiple phone calls and conference calling, making it suitable for hands-free calling.

Voice Commands: Offers a Voice Command feature when paired with compatible Bluetooth devices.

Voice Assist: Enhanced Voice Assist HD feature with high-quality voices for basic radio operation, such as balance and fader adjustments.

USB Port: Includes a standard USB 2.0 port that supports various charging modes, including SDP, CDP, and DCP, providing a full 2A charging current. It supports various audio codecs and file formats and is backward compatible with USB 1.0 and 1.1.

USB File Compatibility: Handles various audio file formats, including AAC, MP3, Ogg Vorbis, and FLAC, at different sample rates and bitrates.

Microprocessor Control: Utilizes a microprocessor for smart algorithms that continuously adjust parameters.

Integration with AM/FM Receiver: Can be fully integrated with the FMR-3.0 AM/FM receiver, allowing control of pairing, Voice Command, playback, call handling, and muting using existing radio controls.

Optional Features: Offers optional front panel RGB status LED and pushbutton for non-FMR-3.0 installations. The pushbutton provides user feedback on operational status.

Seek Button: For signal-seeking radios, the seek button can be used in place of the optional pushbutton.

Microphone: The microphone can be mounted either internally or externally for the best sound quality. It includes a clip-on microphone with a 3M (9.8') cable, allowing flexible placement within the vehicle.

Standard USB 2.0 port:

Supports all USB charging modes; SDP, CDP, and DCP as outlined in BC1.2
Provides a full 2A charging current
Supports proprietary charging modes like Apple® 1A/2A and BlackBerry®
Charging continues even if the radio is turned off
Supports high-quality AAC, MP3, and Ogg Vorbis codecs
Backward compatible with USB 1.0, 1.1
Handles up to 2000 folders and 65,535 files
USB A connector can be extended using standard USB extension cables
Power Supply Efficiency:
Extremely high-efficiency power supply:
Uses only 50% more power while supplying 400% more charging than BTU-3.0
Tightly coupled design eliminates AM radio interference on FMR-3.0
USB File Compatibility:
USB file compatibility:
Handles .aac/.m4a files up to 48kHz and 320kb/s
Handles .mp3 files up to 48kHz and 320kb/s
Handles .ogg files up to 48kHz and 320kb/s
Handles .flac files up to 48kHz and 1000kb/s
File types can be freely intermixed on a USB drive
Playback and Control:
Automatically continues on the last song (sequential mode)
Microprocessor Control:
Microprocessor controlled:
Smart algorithms detect and adjust parameters 4500 times per second
Integration with FMR-3.0 AM/FM Receiver:
Fully integrated with FMR-3.0 AM/FM receiver:
Control pairing, play/pause, next/previous, call accept/reject, and mute using only the existing controls on the radio