{"product_id":"teenage-engineering-ob-4-orange","title":"Teenage Engineering OB-4 Orange Portable Bluetooth Speaker \u0026 Radio","description":"\u003cdiv lang=\"en\"\u003e\n\u003cp\u003e\u003cstrong\u003eTeenage Engineering OB-4 Orange\u003c\/strong\u003e – a portable high-fidelity Bluetooth loudspeaker featuring revolutionary endless tape loop technology and exceptional sound quality. Built around four tailor-engineered speaker elements including two 4-inch long-throw neodymium woofers and a pair of high-efficiency ferrofluid-cooled neodymium tweeters, delivering 76W total power (2 × 38W ultra-high efficiency Class-D amplification). The OB-4 continuously records everything you listen to on a rolling 2-hour loop tape, allowing instant rewind, time-bending, and remixing of any audio source. Features multiple input modes including line-in, Bluetooth (Classic AAC and BLE 5), FM radio with smart antenna, and experimental disk mode with evolving features like ambient, karma, metronome, noise, and loop functions.\u003c\/p\u003e\n\u003cp\u003eEngineered with a flow-optimized bass reflex duct and semi-unified chamber design, the OB-4 delivers crystal-clear, open natural sound with deep bass response from 52 Hz to 25 kHz. The unique motorized user interface features a brushless motor with hall effect sensor and intelligent control algorithm, enabling intuitive interaction through custom direct-drive volume knob and tape dial. The minimalist design houses sophisticated technology beneath its ultra-thin 'orthobook' form factor, with fine-pitch tweeter grille, gel-dampened handle, and UV-resistant orange paint finish. The adjustable folding handle doubles as a stand and houses an integrated smart spiral antenna for enhanced FM reception in challenging environments.\u003c\/p\u003e\n\u003cp\u003eWith an exceptional high-capacity lithium-polymer battery delivering up to 72 hours of FM radio listening or 40 hours average Bluetooth playback (8 hours at maximum volume), the OB-4 provides unmatched portability and endurance. The speaker platform supports wireless control via the Orthoplay app (iOS\/Android) and optional Ortho Remote, compatible with all major streaming services including Spotify and Apple Music. Disk mode serves as Teenage Engineering's public research space for experimental features, currently offering ambient drone generation, 30-in-1 karma mantra box, metronome with 808 pitch adjustment (1-800 BPM), white\/brown\/pink noise generator, and on-device loop creation with beat matching. Designed and manufactured in Czech Republic with amorphous polymer glass fiber-reinforced PC and milled aluminum construction, complete with mains power cable and antenna.\u003c\/p\u003e\n\u003ch3\u003eKEY FEATURES\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEndless 2-hour rolling loop tape with instant rewind and remix capability\u003c\/li\u003e\n\u003cli\u003eFour tailor-engineered speaker elements: 2 × 4\" woofers + 2 × neodymium tweeters\u003c\/li\u003e\n\u003cli\u003e76W total power output: 2 × 38W ultra-high efficiency Class-D amplifiers\u003c\/li\u003e\n\u003cli\u003eMaximum SPL: 92 dB unsupported wideband, 104 dB bass capability @ 1m\u003c\/li\u003e\n\u003cli\u003eExtended frequency range: 52 – 25,000 Hz for full spectrum reproduction\u003c\/li\u003e\n\u003cli\u003eFlow-optimized bass reflex duct with semi-unified chamber design\u003c\/li\u003e\n\u003cli\u003eMultiple input modes: line-in (3.5mm), Bluetooth (Classic AAC + BLE 5), FM radio\u003c\/li\u003e\n\u003cli\u003eLow-latency line input ideal for instruments and studio monitoring\u003c\/li\u003e\n\u003cli\u003eExperimental disk mode: ambient, karma, metronome, noise, loop functions\u003c\/li\u003e\n\u003cli\u003eMotorized user interface with brushless motor and hall effect sensor\u003c\/li\u003e\n\u003cli\u003eCustom direct-drive volume knob and interactive tape dial\u003c\/li\u003e\n\u003cli\u003eSmart spiral antenna integrated into folding handle\u003c\/li\u003e\n\u003cli\u003eExceptional battery life: 72 hours FM, 40 hours average Bluetooth, 8 hours max volume\u003c\/li\u003e\n\u003cli\u003eWireless control via Orthoplay app and Ortho Remote compatibility\u003c\/li\u003e\n\u003cli\u003eUltra-thin 'orthobook' portable design with gel-dampened handle\/stand\u003c\/li\u003e\n\u003cli\u003eUV-resistant orange finish with fine-pitch tweeter grille\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTECHNICAL SPECIFICATIONS\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSpeaker principle: Flow-optimized bass reflex duct and semi-unified chamber\u003c\/li\u003e\n\u003cli\u003eConfiguration: Stereo 2+2 (2 woofers + 2 tweeters)\u003c\/li\u003e\n\u003cli\u003eTweeter: High-efficiency ferrofluid-cooled neodymium driver\u003c\/li\u003e\n\u003cli\u003eWoofer: 4-inch long-throw high-power capacity neodymium driver\u003c\/li\u003e\n\u003cli\u003eActive crossover frequency: 3.5 kHz\u003c\/li\u003e\n\u003cli\u003eFrequency range: 52 – 25,000 Hz\u003c\/li\u003e\n\u003cli\u003eMaximum SPL @ 1m stereo: 92 dB unsupported wideband\u003c\/li\u003e\n\u003cli\u003eBass capability @ 1m: 104 dB SPL supported\u003c\/li\u003e\n\u003cli\u003eAmplifier: 2 × 38W ultra-high efficiency Class-D\u003c\/li\u003e\n\u003cli\u003eTotal power output: 76W (~100 dB SPL in room)\u003c\/li\u003e\n\u003cli\u003eWireless connectivity: Bluetooth Classic (AAC codec), Bluetooth 5 Low Energy\u003c\/li\u003e\n\u003cli\u003eFM radio: Integrated tuner with smart antenna system\u003c\/li\u003e\n\u003cli\u003eLine input: 3.5mm stereo jack (2.8 Vpp for 0 dBFS)\u003c\/li\u003e\n\u003cli\u003eLoop tape: Rolling 2-hour continuous recording buffer\u003c\/li\u003e\n\u003cli\u003eBattery type: High-capacity lithium-polymer (LiPo)\u003c\/li\u003e\n\u003cli\u003eBattery life: 72 hours normal FM \/ 40 hours average Bluetooth \/ 8 hours high volume\u003c\/li\u003e\n\u003cli\u003ePower supply: Universal built-in AC 100-240V 50\/60Hz\u003c\/li\u003e\n\u003cli\u003eDimensions: 232.5 × 284 × 57.5 mm (W × H × D)\u003c\/li\u003e\n\u003cli\u003eWeight: 1.7 kg (3.75 lbs)\u003c\/li\u003e\n\u003cli\u003eMaterials: Amorphous polymer glass fiber-reinforced PC and milled aluminum\u003c\/li\u003e\n\u003cli\u003eColor finish: Orange with UV-resistant paint\u003c\/li\u003e\n\u003cli\u003eDesign features: Fine-pitch tweeter grille, gel-dampened handle, direct-drive controls\u003c\/li\u003e\n\u003cli\u003eHandle function: Adjustable carrying handle doubles as stand, houses antenna\u003c\/li\u003e\n\u003cli\u003eControl interface: Motorized volume knob and tape dial with brushless motor\u003c\/li\u003e\n\u003cli\u003eApp compatibility: Orthoplay (iOS\/Android) for wireless control and updates\u003c\/li\u003e\n\u003cli\u003eCompatible accessories: Ortho Remote, shoulder strap, mesh carry bag (sold separately)\u003c\/li\u003e\n\u003cli\u003eHARM code: 8518220000\u003c\/li\u003e\n\u003cli\u003eCountry of origin: Czech Republic\u003c\/li\u003e\n\u003cli\u003eIncluded accessories: Mains power cable, smart spiral antenna, user manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Teenage Engineering","offers":[{"title":"Default Title","offer_id":58444639142220,"sku":"58048","price":681.5,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0769\/9854\/1644\/files\/TeenageEngineeringOB-4Orange1.jpg?v=1786980261","url":"https:\/\/noiseroom.lt\/lt\/products\/teenage-engineering-ob-4-orange","provider":"Noise Room","version":"1.0","type":"link"}