Radio Shack Fiber Optic Signal Amplifier Toslink connectors, P/N: 15-1588. Maximize digital audio signals for long distance cable runs with this fiber optic signal amplifier toslink connector! It can boost signals by up to 4.5 dB, has a maximum input cable length of 16 feet and a maximum output cable length of 65 feet!
eBay
Ultra-compact Phono Preamp Pre Amp Preamplifier with Level Volume Control 2xRCA Input 2xRCA Output 1/4" TRS Output Interface
Aliexpress UK
You will be blown away by the incredible sound and design of the YU2. Choose a colour that reflects your personality and space. Crank your favourite tunes without sacrificing performance. Featuring a built-in DAC, YU2 lets you connect directly to your computer via USB.
eBay
Fosi Audio K7 HiFi DAC Bluetooth Headphone Amplifier Mic Input USB Audio Gaming DAC for PS5 PC Switch, PCM 384kHz/32Bit & DSD256
Aliexpress UK
All-in-One Amp: A mini amplifier that integrates DAC and power amplification. This stereo amplifier supports up to 5 channels output, switchable between 4.1 and 5.0 channels. It features Bluetooth, AUX, and optical digital inputs, along with pre-out and support for up to 5 speaker outputs.
eBay
Herdio Bluetooth Wall Amplifier 4 Channels Volume Control Wall Plate USB/AUX Inputs Connect 4 Speakers With 12V3A Power Supply
Aliexpress UK
The Audio Authority Model 1185ci is a Distribution Amplifier designed for HDTV signal distribution. It features 1 input and 4 outputs, supporting both analog and digital audio formats. The inputs include Digital Coaxial RCA, Stereo L/R RCA, and Digital Optical TOSLINK, while the outputs include the same options. This A/V splitter is a versatile choice for distributing high-quality audio signals in home entertainment setups. Open box. Never used for a planned project. No returns.
eBay
TOPPING Pre90 Preamplifier & Ext90 Input Extender Hi-Res Audio Ultra-High NFCA Modules AMP RCA/XLR Output Combination
Aliexpress UK
Fully working condition, exept the remote. Play tested both CD and cassette players are working as well as all the buttons on panel.
eBay
TOPPING Pre90 Preamplifier or Ext90 Input Extender Hi-Res Audio Ultra-High NFCA Modules AMP RCA/XLR Output
Aliexpress UK
PCM2704 is a monolithic digital to analog conversion chip. PCM2704 can receive 16bit sound data with sampling rates of 48KHz, 44KHz and 32KHz. External sound card avoids electromagnetic interferences in the chasses, ensuring clear sound output.
eBay
HIFI 20W*2 50W*2 AP50L AP15H Stereo Bluetooth-compatible Digital Amplifier Board AUX USB-C Input 12V/24V Home Theater XY-AP15H
Aliexpress UK
Why Choose the Sound BlasterX G6?. Advanced Headphone Amplification: Equipped with the Xamp discrete headphone amplifier, the G6 ensures that every note and sound effect is crystal clear and lifelike.
eBay
AIYIMA T1 PRO Vacuum Tube Preamplifier Amplifiers Home Audio RCA Bluetooth Input Bass Treble Control HiFi Stereo AUX 12V Trigger
Aliexpress UK
You will be blown away by the incredible sound and design of the YU2. Choose a colour that reflects your personality and space. Crank your favourite tunes without sacrificing performance. Featuring a built-in DAC, YU2 lets you connect directly to your computer via USB.
eBay
MiCWL 6 Channel Big Power Mixer 1200W Amplifier Driving Speaker 48V USB Wireless Wired Microphone Input Sound Console
Aliexpress UK