FiiO Retro Box Desktop Speakers Wireless LDAC High-definition Bluetooth Compatible with M33 M21 JM21 Lossless Music Player

RETROBOX Desktop Bluetooth Speaker Compatible with FiiO JM21 / M21 / M33 Series Players | Bluetooth / USB DAC Modes LDAC High-Quality Bluetooth | 2+2 Acoustic Architecture | 5W+5W Full-Range Output | 15h Ultra-Long Battery Life HiFi / Vintage & More Sound Effects | Built-in Microphone <hr style="font-family:quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;font-size:16px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(15, 17, 21);margin:32px 0px;margin-bottom:32px;margin-top:32px;margin-left:0px;margin-right:0px;display:block;height:1px" align="start"/> The Perfect Companion for Your FiiO Player An Audio Upgrade That Speaks for Itself Tailor-made for the FiiO JM21 / M21 / M33 series. With a simple Bluetooth connection, it transforms into a retro cassette-style Bluetooth speaker—not just the “perfect companion” for your player, but an “upgrade” that brings your music to life, extending your listening experience from headphones to the space around you. <hr style="font-family:quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;font-size:16px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(15, 17, 21);margin:32px 0px;margin-bottom:32px;margin-top:32px;margin-left:0px;margin-right:0px;display:block;height:1px" align="start"/> Dual-Core Acoustic Structure Every Spot Is the Sweet Spot Featuring a 2-channel speaker system with 2 passive radiators, the left and right chambers operate independently without interference. No matter where you place the speaker, it creates a wide, immersive soundstage that fills every corner of the room. The front of the cabinet is designed with a recessed space for the player, while the acoustic structure adopts a side-firing design for more even sound distribution and reduced front-facing directivity, offering greater flexibility in placement. <hr style="font-family:quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;font-size:16px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(15, 17, 21);margin:32px 0px;margin-bottom:32px;margin-top:32px;margin-left:0px;margin-right:0px;display:block;height:1px" align="start"/> Powerful Drive, Enduring Performance Equipped with a 2-channel amplifier and powered by two 18500 batteries in parallel, the system provides ultra-low internal resistance power delivery, enabling a sustained output of 5W + 5W. This allows the two 40mm drivers to fully unleash their potential—delivering rich, solid sound with dynamic impact that defies the speaker’s compact size. <hr style="font-family:quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;font-size:16px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(15, 17, 21);margin:32px 0px;margin-bottom:32px;margin-top:32px;margin-left:0px;margin-right:0px;display:block;height:1px" align="start"/> Dual Connection Modes: Bluetooth / USB DAC HiFi for Every Scenario Bluetooth Mode Supports Bluetooth 6.0 with LDAC high-quality transmission, delivering near-lossless audio detail even over a wireless connection. Enjoy HiFi sound without the wires. USB DAC Mode Connect directly to a computer or laptop to transform the speaker into a high-performance desktop audio system, perfect for immersive wired listening. The USB port combines power and data functionality. When connected, the speaker automatically enters charging/power supply mode. Therefore, it is not recommended to connect to the USB output of smartphones or tablets. *UAC 1.0 driver-free supports 44.1k / 48k / 96k sampling rates.* <hr style="font-family:quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;font-size:16px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(15, 17, 21);margin:32px 0px;margin-bottom:32px;margin-top:32px;margin-left:0px;margin-right:0px;display:block;height:1px" align="start"/> One-Touch Sound Tuning for Any Genre A high-performance DSP chip comes pre-loaded with four finely tuned sound effects: HiFi Mode – True-to-the-recording accuracy

Vintage Mode – Warm, nostalgic character

Pop Mode – Enhanced vocals and rhythm

Warm Mode – Rich, full-bodied atmosphere

Simply press the knob to cycle through modes. No matter your music genre, there’s a sound signature that hits just right. <hr style="font-family:quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;font-size:16px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(15, 17, 21);margin:32px 0px;margin-bottom:32px;margin-top:32px;margin-left:0px;margin-right:0px;display:block;height:1px" align="start"/> Thoughtful Design for Everyday Life Elegant Controls A 360° shuttle knob lets you rotate to adjust volume and press to switch sound effects. Intuitively arranged physical buttons make blind operation effortless. Hands-Free Calls A built-in silicon microphone on the top allows you to pause music, take calls, or activate your voice assistant with ease—seamlessly blending music with daily life. Portable Design Strap lugs are预留 for optional shoulder straps, turning the speaker into a handheld or crossbody audio companion for outdoor adventures. Strap and screws are not included and can be purchased separately. Stable Construction A reinforced chassis and anti-vibration feet ensure rock-solid placement. The push-to-eject mechanism allows for quick and easy removal of the player. <hr style="font-family:quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;font-size:16px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(15, 17, 21);margin:32px 0px;margin-bottom:32px;margin-top:32px;margin-left:0px;margin-right:0px;display:block;height:1px" align="start"/> Smart App Expansion for Continuous Evolution The FIIO Control App offers personalized adjustments and firmware updates, including Bluetooth codec selection and custom EQ tuning. More features will be added through ongoing updates—stay tuned. <hr style="font-family:quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;font-size:16px;font-weight:400;letter-spacing:normal;text-align:start;white-space:normal;color:rgb(15, 17, 21);margin:32px 0px;margin-bottom:32px;margin-top:32px;margin-left:0px;margin-right:0px;display:block;height:1px" align="start"/>RETROBOX – Bringing Your FiiO Player from Your Ears to Your Space.

Support APP: Yes Power Source: Battery Inbox adaptor: Yes Waterproof: No Input Power(W): <25 W 8: RETRO BOX speaker Brand Name: KTUXB Speaker Type: Portable Use: others Origin: Mainland China Surround sound channel configuration: Stereo Voice Control: No 3: FiiO Retro Box 5: portable speaker Sound Mode: Hi-Res Sound Mode Intelligent Personal Assistant: NONE 1: FiiO Audio Crossover: Full-Range Communication: WireLess 7: FiiO speaker Voltage range: Low voltage non-USB (below 75V DC, below 50V AC) Battery: No Category: Speakers Audio latency: other Input/Output: Other Battery Charge Time: Other Output Current: other Number of Loudspeaker Enclosure: 1 High-concerned chemical: none 2: RETRO BOX 4: Desktop speakers 6: Wireless speaker 9: FiiO Retro Box speaker Cabinet Material: Metal Channels: 1