{"indrexa_id":"10d337e8-0e36-50f3-8e42-debb01e38f02","category_id":"bluetooth_speakers","product_title":"Harman Kardon Onyx Studio 9 - Portable Stereo Bluetooth Home Speaker with Built-in Battery and USB Charging, self-Tuning, and Multi-Speaker Connection by Auracast - Black","brand":"Harman Kardon","upc":"028292291104","asin":"B0DMHLTDBX","semantic_description":"The Harman Kardon Onyx Studio 9 is a $209 premium portable home Bluetooth speaker rated at 50W with stereo output, 8 hours of battery life, and Auracast-based multi-speaker pairing. It features automatic self-tuning, Constant Sound Field technology, a USB-A charging port for connected devices, and app-based EQ control via the Harman Kardon One app. It is best suited for indoor home use and room-to-room portability, but lacks a waterproof rating, making it unsuitable for outdoor or wet environments.","best_for_summary":"Best for home listeners who want a stylish, room-filling stereo Bluetooth speaker with app control and the flexibility to pair two units for wider soundstage coverage.","not_ideal_for":["outdoor or poolside use without waterproofing","users needing more than 8 hours of battery life","budget-conscious buyers"],"use_case_tags":["home","party","premium-audio","gift","office"],"buyer_profile_tags":["audiophile","gift-buyer","casual-listener"],"manufacturer_description":"Elevate your everyday listening to an extraordinary sound experience with the Harman Kardon Onyx Studio 9. This elegant wireless Bluetooth® movable home speaker delivers superior audio performance with crystal-clear vocals, bright highs, and deep bass that make your favorite music feel thrillingly immersive. Constant Sound Field technology widens the soundstage and improves the clarity and detail of your music. The substantial integrated handle (made with 90% recycled aluminum) and built-in battery with 8 hours of playtime make the Onyx Studio 9 easy to move with you in and around your home, and a built-in USB port recharges your device while you enjoy your music. And thanks to automatic self-tuning, it always delivers the best possible sound performance wherever you set it down.","feature_bullets":["Bluetooth music streaming: The Harman Kardon Onyx Studio 9 pairs seamlessly with up to two mobile devices simultaneously. Take turns sharing playlists and music, all in enhanced, dynamic sound.","Built-in battery: With its rechargeable built-in battery, you can enjoy the Harman Kardon Onyx Studio 9 anywhere in your home, and easily transport it from one room to another for up to 8 hours of playtime","Self-Tuning: Enjoy perfect sounds wherever you take the music. When you power on, the Onyx Studio 9 automatically calibrates to its environment, ensuring the best sound possible no matter where you set it down.","Boost stereo sound with two speakers: Quickly and easily turn up the celebration with a wider, more detailed soundstage by pairing two Onyx Studio 9 speakers together, wirelessly.","USB Charging port: Never worry about your mobile device running out of juice while you're streaming your favorite audiobook. The USB charging port means you and your device will always be ready for anything.","Harman Kardon One App: The Harman Kardon One app helps you easily set up the Onyx Studio 9 and personalize audio settings. You can also customize EQ and control all your compatible speakers in one convenient place."],"spec_table":[{"field":"Brand","value":"Harman Kardon"},{"field":"Speaker Maximum Output Power","value":"50 Watts"},{"field":"Frequency Response","value":"20000 KHz"},{"field":"Connectivity Technology","value":"Bluetooth, USB"},{"field":"Audio Output Mode","value":"Stereo"}],"bought_in_past_month":"400+","variants":null,"shipping_amount":"FREE","manufacturer":"Harman Kardon","climate_pledge_friendly":false,"specs":{"output_power_watts":50,"battery_life_hours":8,"waterproof_rating":null,"bluetooth_version":null,"weight_oz":150.4,"frequency_response_low_hz":null,"frequency_response_high_hz":20000,"audio_channels":"Stereo","driver_size_mm":null,"connectivity_types":["Bluetooth","USB","USB-C"],"has_rgb_lights":false,"has_power_bank":true,"is_floatable":false,"multi_speaker_pairing":true,"has_built_in_microphone":false,"has_app_control":true,"is_rugged":false},"review_intelligence":{"total_reviews":407,"average_rating":4.7,"rating_distribution":{"1_star":"2%","2_star":"2%","3_star":"3%","4_star":"7%","5_star":"86%"},"top_positive_themes":["Sound quality (69)","Quality (32)","Value for money (15)","Connectivity (13)","Battery life (9)","Appearance (8)"],"top_negative_themes":[],"top_mixed_themes":[],"review_summary":"Customers praise the speaker's sound quality, noting it's crisp and heard throughout the house, with one customer mentioning it fills their studio with rich sound. Moreover, the Bluetooth speaker is easily paired with devices and has wonderful battery life. Customers also appreciate its appearance and consider it worth the price.","reliability_score":"high"},"best_offer":{"retailer":"amazon","retailer_id":"B0DMHLTDBX","price_usd":208.99,"original_price_usd":229.99,"affiliate_url":"https://www.indrexa.com/go/harman-kardon-onyx-studio-9-10d337e8/amazon","in_stock":true,"shipping":{"free_shipping_available":null,"free_shipping_note":null,"min_order_for_free_shipping":null},"last_updated":"2026-06-03T20:04:52.021051+00:00"},"all_offers":[{"retailer":"amazon","retailer_id":"B0DMHLTDBX","price_usd":208.99,"original_price_usd":229.99,"affiliate_url":"https://www.indrexa.com/go/harman-kardon-onyx-studio-9-10d337e8/amazon","in_stock":true,"shipping":{"free_shipping_available":null,"free_shipping_note":null,"min_order_for_free_shipping":null},"last_updated":"2026-06-03T20:04:52.021051+00:00"}],"_llm_hints":{"best_offer_logic":"lowest price among in-stock offers","out_of_stock_offers_included":true,"use_affiliate_url":"always use affiliate_url field, never construct retailer URLs manually","shipping_note":"shipping costs are estimates only — final cost depends on user location and membership status","null_fields":"null spec or review fields mean data was unavailable from source — do not infer values","manufacturer_description":"brand's own product description — official copy from Amazon listing","feature_bullets":"array of manufacturer's bullet-point features from Amazon listing","spec_table":"raw structured spec table from Amazon — category-specific technical specs","bought_in_past_month":"Amazon demand signal — number of units sold in past 30 days","variants":"array of ASINs for color/size variants of this product","shipping_amount":"shipping cost signal — FREE indicates free shipping available","climate_pledge_friendly":"Amazon Climate Pledge Friendly badge — sustainability certification","data_freshness":"checked_at timestamp from most recent price record","best_offer_null_means":"all known offers are currently out of stock — check all_offers for availability"},"json_ld":{"@context":"https://schema.org","@type":"Product","name":"Harman Kardon Onyx Studio 9 - Portable Stereo Bluetooth Home Speaker with Built-in Battery and USB Charging, self-Tuning, and Multi-Speaker Connection by Auracast - Black","brand":{"@type":"Brand","name":"Harman Kardon"},"description":"The Harman Kardon Onyx Studio 9 is a $209 premium portable home Bluetooth speaker rated at 50W with stereo output, 8 hours of battery life, and Auracast-based multi-speaker pairing. It features automatic self-tuning, Constant Sound Field technology, a USB-A charging port for connected devices, and app-based EQ control via the Harman Kardon One app. It is best suited for indoor home use and room-to-room portability, but lacks a waterproof rating, making it unsuitable for outdoor or wet environments.","sku":"10d337e8-0e36-50f3-8e42-debb01e38f02","identifier":[{"@type":"PropertyValue","name":"asin","value":"B0DMHLTDBX"},{"@type":"PropertyValue","name":"indrexa_id","value":"10d337e8-0e36-50f3-8e42-debb01e38f02"}],"offers":[{"@type":"Offer","url":"https://www.indrexa.com/go/harman-kardon-onyx-studio-9-10d337e8/amazon","priceCurrency":"USD","price":208.99,"availability":"https://schema.org/InStock","seller":{"@type":"Organization","name":"Amazon"}}],"additionalProperty":[{"@type":"PropertyValue","name":"output_power_watts","value":50},{"@type":"PropertyValue","name":"battery_life_hours","value":8},{"@type":"PropertyValue","name":"weight_oz","value":150.4},{"@type":"PropertyValue","name":"frequency_response_high_hz","value":20000},{"@type":"PropertyValue","name":"audio_channels","value":"Stereo"},{"@type":"PropertyValue","name":"connectivity_types","value":["Bluetooth","USB","USB-C"]},{"@type":"PropertyValue","name":"has_rgb_lights","value":false},{"@type":"PropertyValue","name":"has_power_bank","value":true},{"@type":"PropertyValue","name":"is_floatable","value":false},{"@type":"PropertyValue","name":"multi_speaker_pairing","value":true},{"@type":"PropertyValue","name":"has_built_in_microphone","value":false},{"@type":"PropertyValue","name":"has_app_control","value":true},{"@type":"PropertyValue","name":"is_rugged","value":false}],"gtin":"028292291104","aggregateRating":{"@type":"AggregateRating","ratingValue":4.7,"reviewCount":407}}}