{"indrexa_id":"99527771-35be-55ab-bdab-d6526794a866","category_id":"bluetooth_speakers","product_title":"Avantree Harmony 2 – Multi-Room Wireless Speaker System with Bluetooth & Wired Inputs, Easy Setup, Expandable, 30ms Low-Latency Sync for Whole-Home, Meeting Rooms & Small Indoor Events | Sync multiple speakers across rooms with low-latency audio via Bluetooth, AUX or optical input, No Wi-Fi or app required","brand":"Avantree","upc":null,"asin":"B0DJNTPZF7","semantic_description":"The Avantree Harmony 2 is a multi-room wireless speaker system rated at 15 watts output, designed to synchronize audio across multiple speakers simultaneously with under 30ms latency via Bluetooth, AUX, or optical input — no Wi-Fi or app required. It is best suited for indoor environments such as homes, classrooms, offices, and meeting rooms where consistent, room-to-room audio coverage is needed for background music, TV sound, or spoken content. A notable limitation is reported reliability: some users have experienced connectivity issues and system failures within months of use, and Bluetooth range has been noted as short in practice.","best_for_summary":"Best for home or office users who want a simple, app-free multi-room audio system for indoor background music or TV sound across several rooms without complex network setup.","not_ideal_for":["Large outdoor or high-volume event use","Users needing long-term reliability based on reported connectivity issues","Those requiring standard USB or XLR microphone input"],"use_case_tags":["home","office","party"],"buyer_profile_tags":["casual-listener","tech-enthusiast"],"manufacturer_description":"【For Multi-room Indoor Audio】Designed for homes, classrooms, offices, and meeting rooms needing the same audio across multiple speakers. Ideal for background music, TV sound, and spoken content with consistent room-to-room coverage.【Ultra Low Latency Under 30ms】Delivers synchronized playback with under-30 ms latency, keeping audio aligned across all speakers. Speech and video sound natural with no noticeable delay or echo during shared listening.【Simple Setup, No App Required】Connect the transmitter to your TV, phone, or laptop via optical, AUX, or Bluetooth. Power on and speakers auto-connect with no app installation or complex setup steps.【Not For Large Outdoor Venues】Not designed for large outdoor spaces or very loud environments due to limited maximum volume. Best suited for indoor use where clear, synchronized audio coverage is required.【Limited Microphone Input Type】Not compatible with USB mics, direct XLR mics, or 3.5mm TRRS headset mics. Requires line-level output (3.5mm TRS or RCA) from a powered mic, wireless receiver, or mixer.","feature_bullets":["【For Multi-room Indoor Audio】Designed for homes, classrooms, offices, and meeting rooms needing the same audio across multiple speakers. Ideal for background music, TV sound, and spoken content with consistent room-to-room coverage.","【Ultra Low Latency Under 30ms】Delivers synchronized playback with under-30 ms latency, keeping audio aligned across all speakers. Speech and video sound natural with no noticeable delay or echo during shared listening.","【Simple Setup, No App Required】Connect the transmitter to your TV, phone, or laptop via optical, AUX, or Bluetooth. Power on and speakers auto-connect with no app installation or complex setup steps.","【Not For Large Outdoor Venues】Not designed for large outdoor spaces or very loud environments due to limited maximum volume. Best suited for indoor use where clear, synchronized audio coverage is required.","【Limited Microphone Input Type】Not compatible with USB mics, direct XLR mics, or 3.5mm TRRS headset mics. Requires line-level output (3.5mm TRS or RCA) from a powered mic, wireless receiver, or mixer."],"spec_table":[{"field":"Brand","value":"Avantree"},{"field":"Speaker Maximum Output Power","value":"15 Watts"},{"field":"Frequency Response","value":"20 KHz"},{"field":"Connectivity Technology","value":"Wireless"},{"field":"Audio Output Mode","value":"Stereo"}],"bought_in_past_month":"50+","variants":null,"shipping_amount":"FREE","manufacturer":"Avantree","climate_pledge_friendly":false,"specs":{"output_power_watts":15,"battery_life_hours":null,"waterproof_rating":null,"bluetooth_version":null,"weight_oz":null,"frequency_response_low_hz":null,"frequency_response_high_hz":null,"audio_channels":"Stereo","driver_size_mm":null,"connectivity_types":["Bluetooth","AUX","USB"],"has_rgb_lights":false,"has_power_bank":false,"is_floatable":false,"multi_speaker_pairing":true,"has_built_in_microphone":true,"has_app_control":false,"is_rugged":false},"review_intelligence":{"total_reviews":157,"average_rating":4,"rating_distribution":{"1_star":"12%","2_star":"4%","3_star":"8%","4_star":"17%","5_star":"59%"},"top_positive_themes":["Ease of use (9)","Value for money (6)"],"top_negative_themes":[],"top_mixed_themes":["Sound quality (30)","Reliability (18)","Connectivity (13)","Quality (12)","Bluetooth connectivity (7)"],"review_summary":"Customers find the speaker system easy to set up and consider it good value for the price. However, the sound quality receives mixed feedback, with some praising it while others report tinny audio and pulsating sound. Moreover, the connectivity and reliability are problematic, with customers reporting frequent disconnections and one unit stopping working after two months. The Bluetooth connectivity and signal quality also receive mixed reviews.","reliability_score":"low"},"best_offer":{"retailer":"amazon","retailer_id":"B0DJNTPZF7","price_usd":279.99,"original_price_usd":null,"affiliate_url":"https://www.indrexa.com/go/avantree-harmony-2-multi-room-99527771/amazon","in_stock":true,"shipping":{"free_shipping_available":null,"free_shipping_note":null,"min_order_for_free_shipping":null},"last_updated":"2026-07-18T08:45:55.660074+00:00"},"all_offers":[{"retailer":"amazon","retailer_id":"B0DJNTPZF7","price_usd":279.99,"original_price_usd":null,"affiliate_url":"https://www.indrexa.com/go/avantree-harmony-2-multi-room-99527771/amazon","in_stock":true,"shipping":{"free_shipping_available":null,"free_shipping_note":null,"min_order_for_free_shipping":null},"last_updated":"2026-07-18T08:45:55.660074+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":"Avantree Harmony 2 – Multi-Room Wireless Speaker System with Bluetooth & Wired Inputs, Easy Setup, Expandable, 30ms Low-Latency Sync for Whole-Home, Meeting Rooms & Small Indoor Events | Sync multiple speakers across rooms with low-latency audio via Bluetooth, AUX or optical input, No Wi-Fi or app required","brand":{"@type":"Brand","name":"Avantree"},"description":"The Avantree Harmony 2 is a multi-room wireless speaker system rated at 15 watts output, designed to synchronize audio across multiple speakers simultaneously with under 30ms latency via Bluetooth, AUX, or optical input — no Wi-Fi or app required. It is best suited for indoor environments such as homes, classrooms, offices, and meeting rooms where consistent, room-to-room audio coverage is needed for background music, TV sound, or spoken content. A notable limitation is reported reliability: some users have experienced connectivity issues and system failures within months of use, and Bluetooth range has been noted as short in practice.","sku":"99527771-35be-55ab-bdab-d6526794a866","identifier":[{"@type":"PropertyValue","name":"asin","value":"B0DJNTPZF7"},{"@type":"PropertyValue","name":"indrexa_id","value":"99527771-35be-55ab-bdab-d6526794a866"}],"offers":[{"@type":"Offer","url":"https://www.indrexa.com/go/avantree-harmony-2-multi-room-99527771/amazon","priceCurrency":"USD","price":279.99,"availability":"https://schema.org/InStock","seller":{"@type":"Organization","name":"Amazon"}}],"additionalProperty":[{"@type":"PropertyValue","name":"output_power_watts","value":15},{"@type":"PropertyValue","name":"audio_channels","value":"Stereo"},{"@type":"PropertyValue","name":"connectivity_types","value":["Bluetooth","AUX","USB"]},{"@type":"PropertyValue","name":"has_rgb_lights","value":false},{"@type":"PropertyValue","name":"has_power_bank","value":false},{"@type":"PropertyValue","name":"is_floatable","value":false},{"@type":"PropertyValue","name":"multi_speaker_pairing","value":true},{"@type":"PropertyValue","name":"has_built_in_microphone","value":true},{"@type":"PropertyValue","name":"has_app_control","value":false},{"@type":"PropertyValue","name":"is_rugged","value":false}],"aggregateRating":{"@type":"AggregateRating","ratingValue":4,"reviewCount":157}}}