{"product_id":"200w-bluetooth-dsp-mono-audio-amplifier-board-apt-x-ready","title":"200W Bluetooth DSP Mono Audio Amplifier Board - Apt-X Ready","description":"\u003cp\u003eIn this review the TSA7551B is evaluated as a dedicated, single-channel amplifier board for hobbyists and compact audio projects; the biggest reason to consider it is its combination of a built-in \u003cstrong\u003eADAU DSP\u003c\/strong\u003e and Apt-X Bluetooth, which makes it unusually flexible for tuning and wireless input in one compact module. The board pairs easily with phones or computers, runs from a wide DC14V-39V range, and delivers a full 200W mono output while using a class-D architecture to stay efficient and cool in normal use.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e200W Mono Output:\u003c\/strong\u003e A single channel delivers up to 200W RMS, suitable for driving medium-power passive loudspeakers in a dedicated mono setup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated ADAU DSP:\u003c\/strong\u003e Onboard DSP allows crossover, EQ and mixing so stereo Bluetooth inputs are blended and tuned for a single speaker channel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApt-X Bluetooth:\u003c\/strong\u003e The AudioB Bluetooth module supports Apt-X for improved wireless audio fidelity from phones and computers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide DC Power Range:\u003c\/strong\u003e Accepts DC14V-39V supplies so it can be used with a variety of common bench PSUs or battery systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass-D Efficiency:\u003c\/strong\u003e Based on a class-D amplifier design the board runs efficiently and produces less heat under normal loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart Cooling:\u003c\/strong\u003e The fan remains off during normal operation and only starts when temperature rises, reducing background noise.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis board is aimed at DIY audio builders, custom speaker projects, and installers who need a powerful single-channel amplifier with onboard DSP and wireless input. It is especially useful where mixing stereo sources to a mono driver or a single speaker array is required, and when Apt-X Bluetooth connectivity is desired for better wireless audio quality.\u003c\/p\u003e\n\u003cp\u003eIt is not intended for users who need a multi-channel home theater receiver or built-in source switching and remote control. Buyers who require factory-finished enclosures, speaker protection relays, or integrated user interfaces should look for completed amplifiers rather than a bare amplifier board.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh single-channel power output useful for driving passive 3, 4 or 8 speakers in a mono configuration.\u003c\/li\u003e\n\u003cli\u003eOnboard \u003cstrong\u003eADAU DSP\u003c\/strong\u003e enables tuning, mixing and crossover adjustments without extra hardware.\u003c\/li\u003e\n\u003cli\u003eApt-X equipped Bluetooth module provides convenient, higher-quality wireless streaming from phones and PCs.\u003c\/li\u003e\n\u003cli\u003eEfficient class-D design and a smart cooling fan reduce heat and audible fan noise during normal operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOne-channel mono output limits use for stereo applications unless you accept mixed stereo-to-mono output via DSP.\u003c\/li\u003e\n\u003cli\u003eAs a bare board it requires external power supply, wiring and mounting, so it is not plug-and-play for non-technical users.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eTSA7551B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power\u003c\/td\u003e\n\u003ctd\u003e200W mono\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBluetooth\u003c\/td\u003e\n\u003ctd\u003eAudioB module with Apt-X support\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDSP\u003c\/td\u003e\n\u003ctd\u003eIntegrated ADAU DSP, I2S 48KHz sampling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmplifier Type\u003c\/td\u003e\n\u003ctd\u003eClass-D (based on TDA7498E)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003eDC 14V to 39V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling\u003c\/td\u003e\n\u003ctd\u003eSmart fan; idle off, auto on when hot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe TSA7551B is a strong choice for DIYers and installers who need a powerful mono amplifier with flexible DSP and Apt-X Bluetooth in a compact board form. It delivers solid power, tuning capability and wireless convenience at a reasonable value if you can accommodate external power and enclosure needs, but it is not a substitute for a finished stereo receiver.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan I drive multiple passive speakers with this board?\u003c\/strong\u003e\u003cbr\u003eYes, the 200W mono output can be used to drive 3, 4 or 8 passive speakers as long as the combined impedance and power handling are respected.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat power supply does it need?\u003c\/strong\u003e\u003cbr\u003eUse a DC power supply in the DC14V-39V range with suitable current capability for the intended output power.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the Bluetooth input provide stereo?\u003c\/strong\u003e\u003cbr\u003eThe Bluetooth module can receive stereo, but the board mixes left and right in the DSP to provide a single mono channel output.\u003c\/p\u003e","brand":"TinySine","offers":[{"title":"Default Title","offer_id":46781843570907,"sku":"B0DYTVMHN9","price":58.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/518VoER_bKL.jpg?v=1747854710","url":"https:\/\/gearmusthave.com\/products\/200w-bluetooth-dsp-mono-audio-amplifier-board-apt-x-ready","provider":"GearMustHave","version":"1.0","type":"link"}