![Amazon.com: FX AUDIO Bluetooth Stereo Amplifier 2.1 Channel Mini Home Audio Stereo Amp with Subwoofer Output XL-2.1BL Passive Subwoofer Amplifier with Bass & Treble Control 2 x 50W + 100W DC 24V Amazon.com: FX AUDIO Bluetooth Stereo Amplifier 2.1 Channel Mini Home Audio Stereo Amp with Subwoofer Output XL-2.1BL Passive Subwoofer Amplifier with Bass & Treble Control 2 x 50W + 100W DC 24V](https://m.media-amazon.com/images/I/61ytfPfeMQL._AC_SY355_.jpg)
Amazon.com: FX AUDIO Bluetooth Stereo Amplifier 2.1 Channel Mini Home Audio Stereo Amp with Subwoofer Output XL-2.1BL Passive Subwoofer Amplifier with Bass & Treble Control 2 x 50W + 100W DC 24V
![Amazon.com: Skar Audio Dual 12" Complete 2,400 Watt SDR Series Subwoofer Bass Package - Includes Loaded Enclosure with Amplifier : Electronics Amazon.com: Skar Audio Dual 12" Complete 2,400 Watt SDR Series Subwoofer Bass Package - Includes Loaded Enclosure with Amplifier : Electronics](https://m.media-amazon.com/images/S/aplus-media-library-service-media/8166c922-dbaf-4edb-805b-a62cf8249d0a.__CR0,0,970,300_PT0_SX970_V1___.jpg)
Amazon.com: Skar Audio Dual 12" Complete 2,400 Watt SDR Series Subwoofer Bass Package - Includes Loaded Enclosure with Amplifier : Electronics
![Amazon.com: AIYIMA B01 2.1 Amplifier Bluetooth Receiver with Subwoofer Output 50W x 2+100W and AIYIMA 10M 32.8 feet Speaker Cable HiFi Audio Line Bundle : Electronics Amazon.com: AIYIMA B01 2.1 Amplifier Bluetooth Receiver with Subwoofer Output 50W x 2+100W and AIYIMA 10M 32.8 feet Speaker Cable HiFi Audio Line Bundle : Electronics](https://m.media-amazon.com/images/I/61cejRqYonL._AC_SY355_.jpg)
Amazon.com: AIYIMA B01 2.1 Amplifier Bluetooth Receiver with Subwoofer Output 50W x 2+100W and AIYIMA 10M 32.8 feet Speaker Cable HiFi Audio Line Bundle : Electronics
![Why are these pre out / main in just connected like this? And also, would you use this to hook up a powered subwoofer? Technics SA-R921 receiver. : r/BudgetAudiophile Why are these pre out / main in just connected like this? And also, would you use this to hook up a powered subwoofer? Technics SA-R921 receiver. : r/BudgetAudiophile](https://preview.redd.it/d66cdilbzae11.png?auto=webp&s=b800f083815aa5ad7cc313e1925f787e9dab0c31)
Why are these pre out / main in just connected like this? And also, would you use this to hook up a powered subwoofer? Technics SA-R921 receiver. : r/BudgetAudiophile
![Amazon.com: Monoprice 60-Watt Powered Subwoofer - 8 Inch With Auto-On Function, For Studio And Home Theater Black : Everything Else Amazon.com: Monoprice 60-Watt Powered Subwoofer - 8 Inch With Auto-On Function, For Studio And Home Theater Black : Everything Else](https://images-na.ssl-images-amazon.com/images/I/61-73Q-b6lL.__AC_SY300_SX300_QL70_ML2_.jpg)
Amazon.com: Monoprice 60-Watt Powered Subwoofer - 8 Inch With Auto-On Function, For Studio And Home Theater Black : Everything Else
![Amazon.com: Denon HEOS Link Wireless Pre-Amplifier For Multi-Room Audio - Series 2 (New Version), Amazon Alexa Compatibility, Powered Subwoofer Connection, Black with Silver, 2.91 x 6.14 x 5.83 : Electronics Amazon.com: Denon HEOS Link Wireless Pre-Amplifier For Multi-Room Audio - Series 2 (New Version), Amazon Alexa Compatibility, Powered Subwoofer Connection, Black with Silver, 2.91 x 6.14 x 5.83 : Electronics](https://m.media-amazon.com/images/I/81wtGpU-gEL._AC_SL1500_.jpg)
Amazon.com: Denon HEOS Link Wireless Pre-Amplifier For Multi-Room Audio - Series 2 (New Version), Amazon Alexa Compatibility, Powered Subwoofer Connection, Black with Silver, 2.91 x 6.14 x 5.83 : Electronics
![AV Receiver Wireless Audio Pre Out Adapter for Logitech Z 5500 Z5500 PID R001 R199/R636 Stainless Steel DB 15 Gold RCA Female 7805 Voltage Inside Cable Conventer Solder Case: Amazon.de: Electronics & AV Receiver Wireless Audio Pre Out Adapter for Logitech Z 5500 Z5500 PID R001 R199/R636 Stainless Steel DB 15 Gold RCA Female 7805 Voltage Inside Cable Conventer Solder Case: Amazon.de: Electronics &](https://m.media-amazon.com/images/I/51WFuYJu+xL._AC_.jpg)
AV Receiver Wireless Audio Pre Out Adapter for Logitech Z 5500 Z5500 PID R001 R199/R636 Stainless Steel DB 15 Gold RCA Female 7805 Voltage Inside Cable Conventer Solder Case: Amazon.de: Electronics &
![Mediabridge™ Ultra Series Subwoofer Cable (50 Feet) - Dual Shielded with Gold Plated RCA to RCA Connectors - Black - (Part# CJ50-6BR-G1) : Electronics - Amazon.com Mediabridge™ Ultra Series Subwoofer Cable (50 Feet) - Dual Shielded with Gold Plated RCA to RCA Connectors - Black - (Part# CJ50-6BR-G1) : Electronics - Amazon.com](https://images-na.ssl-images-amazon.com/images/I/814wXBGM0UL.__AC_SX300_SY300_QL70_ML2_.jpg)
Mediabridge™ Ultra Series Subwoofer Cable (50 Feet) - Dual Shielded with Gold Plated RCA to RCA Connectors - Black - (Part# CJ50-6BR-G1) : Electronics - Amazon.com
![Amazon.com: Yamaha 8" 100W Powered Subwoofer - Black (NS-SW050BL) & Amazon Basics Subwoofer Cable - 8 Feet Amazon.com: Yamaha 8" 100W Powered Subwoofer - Black (NS-SW050BL) & Amazon Basics Subwoofer Cable - 8 Feet](https://m.media-amazon.com/images/I/91ka6Pvh9rL._AC_SX425_.jpg)
Amazon.com: Yamaha 8" 100W Powered Subwoofer - Black (NS-SW050BL) & Amazon Basics Subwoofer Cable - 8 Feet
![Amazon.com: Skar Audio Dual 12" 2400W Loaded SDR Series Vented Subwoofer Enclosure | SDR-2X12D4 : Electronics Amazon.com: Skar Audio Dual 12" 2400W Loaded SDR Series Vented Subwoofer Enclosure | SDR-2X12D4 : Electronics](https://m.media-amazon.com/images/I/71n3AUWcJHL._AC_SY355_.jpg)
Amazon.com: Skar Audio Dual 12" 2400W Loaded SDR Series Vented Subwoofer Enclosure | SDR-2X12D4 : Electronics
![Amazon.com: Fosi Audio TP-02 Subwoofer Amplifier TDA7498E Mini Sub Bass Amp Digital Class D Integrated Subwoofer Amplifier 220Watt : Electronics Amazon.com: Fosi Audio TP-02 Subwoofer Amplifier TDA7498E Mini Sub Bass Amp Digital Class D Integrated Subwoofer Amplifier 220Watt : Electronics](https://m.media-amazon.com/images/I/71LMMV0n6iL._AC_SX425_.jpg)
Amazon.com: Fosi Audio TP-02 Subwoofer Amplifier TDA7498E Mini Sub Bass Amp Digital Class D Integrated Subwoofer Amplifier 220Watt : Electronics
![Amazon.com: Car Loaded Subwoofer Box by Massive Audio BG6 - Pre-Loaded Subwoofer - 6.5 Inch, 250 Watts RMS / 500 Watts MAX, 2 Ohm Loaded Subwoofer Enclosure. : Electronics Amazon.com: Car Loaded Subwoofer Box by Massive Audio BG6 - Pre-Loaded Subwoofer - 6.5 Inch, 250 Watts RMS / 500 Watts MAX, 2 Ohm Loaded Subwoofer Enclosure. : Electronics](https://m.media-amazon.com/images/I/81g2Kt-nWGL._AC_SX425_.jpg)
Amazon.com: Car Loaded Subwoofer Box by Massive Audio BG6 - Pre-Loaded Subwoofer - 6.5 Inch, 250 Watts RMS / 500 Watts MAX, 2 Ohm Loaded Subwoofer Enclosure. : Electronics
![Amazon.com: BAQI 12V-24V Low-Pass Filter NE5532 Bass Tone Subwoofer Pre-Amplifier Preamp Board : Electronics Amazon.com: BAQI 12V-24V Low-Pass Filter NE5532 Bass Tone Subwoofer Pre-Amplifier Preamp Board : Electronics](https://m.media-amazon.com/images/I/61n3acXNLQL._AC_SX425_.jpg)