> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # Stereo Bluetooth Amplifier Board **Type:** Product page · **SKU:** DFR0675-EN · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia) **Page:** https://core-electronics.com.au/stereo-bluetooth-amplifier-board.html ([markdown](https://core-electronics.com.au/stereo-bluetooth-amplifier-board.html.md)) This is a small size and cost-effective Bluetooth 5.0 digital amplifier module with a volume adjustment function. It can connect to two speakers and match a wide... ## Pricing - **Price:** $15.80 (inc GST) — $14.36 AUD, exc GST - **Quantity discounts:** 6+ $13.65 (exc GST) · 12+ $13.07 (exc GST) ## Availability & dispatch - Available with a lead time — expect dispatch between Aug 24 and Aug 28. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=DFR0675-EN:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/DFR0675-EN:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description This is a small size and cost-effective Bluetooth 5.0 digital amplifier module with a volume adjustment function. It can connect to two speakers and match a wide variety of high-power speakers (40W-200W). This board can be used as a small Bluetooth speaker when connected to [Raspberry Pi](https://core-electronics.com.au/raspberry-pi.html) or a mobile phone, offering you excellent two-channel stereo sound effects. In addition, the board comes with power supply reverse connection protection, short circuit protection, and so on. ![](https://core-electronics.com.au/media/wysiwyg/product_images/DFR0675-EN-1.jpg) **Operating Instructions** After the power is turned on, the blue indicator flashes quickly, and then it enters the Bluetooth mode; After playing the Beep, it goes into the pairing mode, waiting for pairing; Turn on the Bluetooth of a phone or Raspberry Pi, "XY-P40W" (module Bluetooth name) will be searched and displayed, click "XY-P40W" to connect to the board. It connects successfully with a Beep. When the indicator is always on, you can play your music on the phone, the indicator keeps slowly blinking when playing music. 1. Keep the amplifier board as far away as possible from the WIFI signal (router). 2. 5-24VDC is recommended; upper than 26V, the chip will be burnt. 3. Input voltage can not exceed 16V when connecting to 4Ω speakers, and not exceed 24V when connecting to 8Ω speakers. 4. Recommended power supply current 2A at least. 5. The speaker wire should be within 1m. 6. Pay attention to electrostatic protection. Since the Bluetooth chip is very sensitive to static electricity, you must discharge the static electricity on your hand to avoid the static electricity from puncturing the chip when touching the board. 7. It is recommended to use a speaker above 40W to avoid speaker damage. 8. When the module’s power supply voltage is relatively low but the output power is relatively large, noise may be produced. You can reduce the volume or increase the power supply voltage to solve it. #### Specifications - Voltage: 5-24V - Bluetooth 5.0 - Transmission Distance: 15m (Line of Sight) - Sound Channel: two channels (stereo) - Output Power(@1KHz): 20W\*2 @12V 4Ω - 30W\*2 @16V 4Ω - 30W\*2 @21V 8Ω - 40W\*2 @24V 8Ω - Match Speaker: 4Ω(5~16V), 8Ω(5~24V) #### Shipping List - Stereo Bluetooth Amplifier Board x1 - Acrylic Shell x1 - Accessories Packet x1 ## Guides for this product - [DIY 10W Bluetooth Speaker - No Code Needed – How to use a Bluetooth 4.2 Audio Receiver Board with Onboard Amplifier (MH-M38)](https://core-electronics.com.au/guides/wireless/mh-m38-bluetooth-10w-speaker/) ## Videos for this product - [DIY USB Boombox with a 4.2 Bluetooth Audio Receiver (MH-M38) - Zero Code!](https://core-electronics.com.au/videos/diy-usb-boombox-with-a-42-bluetooth-audio-receiver-mh-m38-zero-code) ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/d/f/dfr0675-en.jpg)