Woot! has the New Nakamichi Single DIN 50Wx4 Bluetooth & CD Car In-Dash Stereo Receiver (NQ822B) for $39.99. Shipping is free with Amazon Prime, otherwise $6 per order.

Single-DIN Car Stereo Receiver
Usable Audio Formats: CD/MP3/WMA
Supported Bluetooth Profiles: A2DP, AVRCP, HFP
Introducing the Nakamichi NQ822B 1-DIN CD/MP3/USB Car Stereo In-Dash Receiver with Bluetooth – your perfect companion for the road! Designed to elevate your driving experience, this sleek and versatile car stereo boasts an array of impressive features. With a power supply requirement of DC 12V and a maximum power output of 50W × 4CH, get ready to enjoy a powerful audio performance that will transform your drive into a concert on wheels. The unit's dimensions of 178×160×50mm make it a seamless fit for your dashboard, and at just 1.3 kg, it's both lightweight and compact. Equipped with a 10A fuse, you're ensured safe and reliable usage.
Stay entertained with the built-in radio functionality. Tune in to your favorite FM stations within a frequency range of 87.5MHz-107.9MHz (USA) or 87.5MHz-108.0MHz (EUROPE), and enjoy the convenience of channel steps set at 200 KHz (USA) or 50KHz (EUROPE). For AM enthusiasts, explore a frequency range of 530KHz-1710KHz (USA) or 522-1620KHz (EUROPE), with channel steps of 10 KHz (USA) or 9KHz (EUROPE).
Seamlessly connect your devices via USB – play your preferred CD, MP3, or WMA audio formats. The USB 2.0 port not only supports various file types but also provides a 5V/1A USB charging option to keep your devices powered up on the go. With a frequency response of 20Hz-20KHz and an S/N ratio of 60dB, enjoy crisp and clear sound quality that enhances every note and beat.
And that's not all – the Nakamichi NQ822B also comes equipped with Bluetooth capabilities. Supported Bluetooth profiles including A2DP, AVRCP, and HFP ensure a seamless wireless connection for your devices. With a frequency range operating within the 2.4GHz spectrum, you can effortlessly stream your favorite music and take hands-free calls, all while keeping your focus on the road.