Amazon.com: dbx 286s Microphone Preamp/Channel Strip with Lewitt LCT-240-PRO-WHT Condenser Microphone, XLR Cable, 1/4" to 1/4" TRS Cable and StreamEye Polishing Cloth : Musical Instruments
NAD® Masters Surround Sound Preamp Processor-M17 V2i | Stereo East Home Theater | Frisco, TX
UpBright New AC in Power Cord Cable Plug Lead Compatible with Marantz Home Theater Preamp/Processor Processing and Dolby Atmos AV7701 AV7702 AV7703 AV7005 AV8801 AV8802 AV8802A AV8803 AV9000
Amazon.com: D Debra Audio E270 Professional Digital Pre-stage Effect Anti-howling Audio Processor with 48 bit DSP Effect Echo USB MP3 Bluetooth Optical For House Karaoke, Stage, Performance (E270) : Musical Instruments
Marantz Cinema 60 7.2-channel home theater receiver with Dolby Atmos®, Bluetooth®, Apple AirPlay® 2, and Amazon Alexa compatibility at Crutchfield
Amazon.com: ART Tube MP Professional Mic Preamp/Processor : Electronics
Marantz® 15.4 Channel Black Preamplifier Processor | Paradyme
Amazon.com: PREAMP 9 Single-ended Pure Class A 20HZ -20KHZ Transistor Preamplifier Board : Musical Instruments
Amazon.com: Fosi Audio Box X2 Phono Preamp for MM Turntable Phonograph Preamplifier with Gain Gear Mini Stereo Audio Hi-Fi Pre-Amplifier for Record Player with DC 12V Power Supply : Electronics