{"product_id":"zk-502t-bluetooth-5-0-stereo-power-amplifier-board-50w-50w-mini-amp","title":"ZK-502T Bluetooth 5.0 Stereo Power Amplifier Board 50W+50W - Mini Amp","description":"\u003cp\u003eIn this review the ZK-502T Power Amp is evaluated as a compact option for DIY home speakers and small stereo installs, best suited to hobbyists who need a simple, powerful amp board. The single biggest reason to buy is the combination of \u003cstrong\u003eBluetooth 5.0 wireless\u003c\/strong\u003e convenience and a true 2.0 channel 50W+50W rated output in a very small package, which makes it easy to add modern streaming to passive speakers without replacing components.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBluetooth 5.0 + AUX:\u003c\/strong\u003e Provides both wireless playback and wired input so sources like phones, computers or TVs can be used interchangeably when Bluetooth is disconnected.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2.0 Channel 50W+50W Output:\u003c\/strong\u003e Delivers enough power for most small to medium passive speakers and home stereo setups rated at about 50W per channel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTreble and Bass Adjustment:\u003c\/strong\u003e Independent on-board controls let the listener tailor tone directly from the module without changing the source device settings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection Circuitry:\u003c\/strong\u003e Built-in over-voltage, under-voltage, over-heat and short-circuit protection increase reliability and make the module safer for home use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHifi-oriented Design:\u003c\/strong\u003e Low-noise front-stage op amp, shielding and AM interference suppression help reduce noise and improve clarity for better listening experiences.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact and Easy to Install:\u003c\/strong\u003e Small footprint with interface labels on the protective plate simplifies wiring into DIY cabinets, car installs or portable setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe ZK-502T is aimed at DIY audio builders, makers upgrading passive speakers, or anyone who needs a compact \u003cstrong\u003estereo amplifier module\u003c\/strong\u003e with modern wireless input. Its 50W+50W rating and tone controls suit small living rooms, desktop systems and portable installations where space is limited.\u003c\/p\u003e\n\u003cp\u003eIt is not the best choice for high-end audiophiles seeking tube-like warmth or for very large rooms that need far more continuous power and large speaker arrays; those users should consider larger, dedicated integrated amplifiers or multi-channel receivers.\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\u003eReliable wireless connection via Bluetooth 5.0 for easier streaming from phones and tablets.\u003c\/li\u003e\n\u003cli\u003ePractical tone controls allow quick treble and bass adjustments at the module.\u003c\/li\u003e\n\u003cli\u003eComprehensive protection features and a shielded design reduce interference and risk of damage.\u003c\/li\u003e\n\u003cli\u003eCompact size with labeled interfaces makes installation straightforward for DIY projects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAUX input requires Bluetooth to be disconnected to avoid conflicts, which is an extra step during source switching.\u003c\/li\u003e\n\u003cli\u003eWhile rated at 50W per channel, peak performance will depend on speaker efficiency and power supply within the DC12-24V range.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eZK-502T Power Amp Bluetooth 5.0 Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e2.0 stereo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Power\u003c\/td\u003e\n\u003ctd\u003e50W + 50W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003eBluetooth 5.0 and AUX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003eDC 12-24V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControls\u003c\/td\u003e\n\u003ctd\u003eIndependent treble and bass adjustment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003eOver-voltage, under-voltage, over-heat, short-circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe ZK-502T is a well-rounded mini amplifier module that offers modern \u003cstrong\u003eBluetooth streaming\u003c\/strong\u003e and tone control in a compact, protected chassis, making it a good value for DIYers and small-room systems. Choose this if you want to add wireless playback to passive speakers without a large external amp; those needing higher power or audiophile-grade refinement should look for a larger integrated amplifier.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use AUX and Bluetooth at the same time?\u003c\/strong\u003e\u003cbr\u003eAnswer. The module requires Bluetooth to be disconnected when using AUX to avoid input conflicts, so only one input should be active at a time.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat voltage do I need to power the board?\u003c\/strong\u003e\u003cbr\u003eAnswer. The amplifier runs from DC 12-24V; performance depends on a stable supply in that range.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this drive passive 50W speakers?\u003c\/strong\u003e\u003cbr\u003eAnswer. Yes, the board is rated at 50W+50W and is compatible with two passive speakers rated near 50W, though actual output depends on speaker efficiency and power source.\u003c\/p\u003e","brand":"ARRAROWN","offers":[{"title":"Default Title","offer_id":46781159768283,"sku":"B08G1MCHC1","price":24.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61IvaRhiSZL._AC_SL1024.jpg?v=1747854527","url":"https:\/\/gearmusthave.com\/products\/zk-502t-bluetooth-5-0-stereo-power-amplifier-board-50w-50w-mini-amp","provider":"GearMustHave","version":"1.0","type":"link"}