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Best Usb Preamp

Douk Audio P1 Bluetooth Vacuum Tube Preamp Headphone Amplifier with Extra GE5654 Tubes

  • Douk Audio P1 Preamp has been acclaimed by countless audiophiles worldwide, now we upgrade 6J5 to JAN5654 / GE5654 tubes according to many audiophiles' feedback, the sound quality will be greatly improved..
  • With 3 kinds of audio input(Bluetooth/USB/RCA) and 2 kinds of output(RCA/3.5mm headphone), P1 can be used as HiFi tube Preamp, USB DAC or headphone amp with HiFi clear, warm, dynamic, sweet tube sound, bringing extremely high-quality listening experience..
  • Bluetooth 5.0 (QCC3034) supporting APTX-HD lossless transmission. PC-USB (CM6642) supporting 24bit 192KHz and compatible with Windows/Mac/Linux system, matching well with many audio devices such as iPod, Phone, MP3 players, TV, Blu-ray players, Echo Dot, CD players, etc..
  • Adopting NE5532 op amp+classic 47 headphone amp architecture which can drive 32-300 ohms headphones, and a bypass switch is specially designed to turn on/off the tone control, more convenient to enjoy original sound or obtain more delicate sound with treble and bass control knob, adding much fun and higher playability..
  • Exquisite appearance with proper size, ....
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Rockville RPA6000USB 19' 1000w 4 Chan DJ/Pro/Karaoke Amplifier/Mixer Amp w/ USB

  • Rockville RPA60BT 19" 1000 Watt 2-Channel USB and Bluetooth Karaoke Receiver/Amplifier/Mixer..
  • 19" rack mountable (removable rack brackets) digital hybrid amplifier/receiver. RMS Power @ 4 Ohms: 125w x 2. Peak Power @ 4 Ohms: 500w x 2..
  • RMS Power @ 8 Ohms: 100w x 2. Peak Power @ 8 Ohms: 400w x 2. THD: > 0.1%. Input Sensitivity: 400mv/33 KOhm. Frequency Response: 20 Hz - 20 kHz. Signal to Noise Ratio: 80 dB..
  • Tone Characteristic: 100Hz-10KHz ±12dB. 110v/220v Switchable. Front Inputs: 3.5MM front aux input, 1/4” Headphone Jack, (2) 1/4" Mic Inputs, USB Input, Optical. Rear Inputs: RCA, Optical, Coaxial. Rear Outputs: Preamp output for an external additional amplifier or powered speaker..
  • Sub preamp output to connect a powered subwoofer or an amplifier. Record output to mixer. Record output to connect a recording device. Bluetooth Capable. Rear Speaker Terminals: Banana plug / binding post outputs for 4 speakers (2 on Channel A and 2 on Channel B).
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Rockville PPA52 Preamp Pro 1U Pre-Amplifier w/Bluetooth/USB/Computer Interface

  • Rockville PPA52 Preamp Pro 1U Rack Pre-Amplifier w/Bluetooth/USB/PC Interface..
  • Top of the line professional preamp with low noise and high sound quality. Built in reliable Bluetooth audio playback with long range. Built in USB/computer interface allows you to record the master output to your DAW or to play songs from your favorite software on your computer. Built in USB MP3 player. (3) RCA aux inputs. (1) RCA Phono Input. (1) XLR and ¼” Combo jack front mic/line input. (2) ¼” Inputs (mono or stereo). (2) XLR outputs (stereo or mono)..
  • 1U rack mount size. Built-in 3 band Equalizer (bass, mid, treble). Left / Right balance adjustment. Mono/Stereo selectable. Mute. Low cut crossover filter. Headphone output for listening or monitoring. Loudness compensation circuit which at low-to-medium volume boosts the bass and treble response. 100-240V worldwide voltage power adaptor.
  • Specifications: Impedance. . Mic: 1mV / 3 Kohms. Phono: 3mV / 47 Kohms. Pre-Output: max. 5V / 1 Kohms. Total Harmonic Distortion. . Mic: less than 0.02%. Phono: less than 0.04%. RCA Aux: less than 0.01%. Signal to Noise Ratio. . Mic: more than 70 dB. Phono: more than 90 dB. RCA Aux: more than 100 dB..
  • General: Product weight: 4.43 lbs. Product dimensions: 18.89" x 6.49" x 1.73".
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2007 Grammy Nominees

  • Integrated Bluetooth technology, one-touch listening with NFC, Front USB for iOS & msc/mtp USB devices. Built-in mic.
  • USB playback supports MP3/wma/a AC/wav/FLAC, siriusxm satellite Radio ready, works with Pandora (iOS and Android).
  • Siri control for hands-free control of your iOS Device, advanced sound with EQ5, Mega bass, and lpf Crossover, 2-volt rear and sub RCA preamp outputs.
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NAD PP4 Digital Phono USB Preamplifier

  • ...ION: Built-in Bluetooth for wireless music streaming receiver that ranges up to 25’+ ft with digital LCD display. It works with all of today’s latest devices such as iPhone, android, smartphone, iPad, tablets, computer and the likes.
  • AUX INPUT AND OUTPUT: This receiver/preamp also features two sets of RCA inputs, RCA preamp out, 2 Mono RCA's for subwoofer output, and Bluetooth that wirelessly connects to your iPod and MP3 player. Also, an FM antenna for better signal reception.
  • FRONT CONTROL CENTER: The front panel button control center consists of a power switch, independent input source selectable, bass, treble, mid, balance and master volume adjustment. Also, pack with headphone jack, USB flash and SD memory card readers.
  • REMOTE CONTROL: A simple and user-friendly remote control is included with the PPRE70BT, providing all the functionality you need from switching input sources. And, it will allow you to access all functions of the receiver quickly and efficiently.
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VOX Valvetronix VT20X Modeling Amplifier,Black

  • |20 Watt Modeling Amplifier| The VT20X is rated at 20 Watts making it the ideal choice for an at-home amplifier, combining sophisticated modeling....
  • |12AX7 Preamp Tube| Multi-stage Valvetronix tube preamp design incorporates authentic analog circuitry to achieve the subtle tonal adjustments and....
  • |Ultimate Versatility| 11 realistic amp models and 13 high quality on-board effects allow you to craft your signature tone, and save it across 33....
  • |AUX In & Headphone Out| Aux in jack and headphone output make silently practicing or recording simple. Use the USB connection to dive deeper into....
  • |Small But Loud| The compact combo amplifier is designed with a tightly sealed cabinet and a proprietary bass-reflex design to deliver stunning....
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Rockville Hybrid Bluetooth Karaoke Home Theater System and (4) 4\ Speakers+(2) Mics

  • ...Tone Characteristic: 100 Hz - 10 kHz +/-12dB, 110v/220v switchable.
  • 19" Rack Mountable (Removable Rack Brackets) Digital Hybrid Amplifier/Receiver, Inputs On Front of Unit, lpod/MP3 - 1/8" mini jack style, 1/4" headphone jack, 1/4" Mic 1 and Mic 2 Inputs,USB Input, Rear Inputs: RCA Input for DVD or CD, Rear Outputs: Preamp output for an external additional amplifier or powered speaker,Sub preamp output to connect a powered subwoofer or an amplifier,Record output to connect a recording device,Rear Speaker Terminals: Banana plug / binding post outputs for speakers.
  • Bluetooth Capable, Built-in Preamplifier, Multicolor LED display, Digital Quartz Synthesized AM / FM tuner w/50 presets & auto scan, Preset EQ: Rock, Pop, Classical, Jazz, Remote control for quick access to all functions, Vacuum Fluorescent Digital output display meters, Separate gain controls for pre-amp & subwoofer, Digital karaoke system, 2 front microphone inputs w/volume, tone and echo controls, Built-in mic mixer with echo control, USB input for music files from USB thumb drive.
  • Features of HP4S-8: Pair of RockvilIe HP4S-8 4" Black 360 Watt Outdoor / Indoor Home Theater Speakers with Swivel Bracket, Peak Power Handling: 360 Watts (per pair), RMS Power Handling: 120 Watts (per pair), IPX44....
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DYNASTY PROAUDIO UA2D USB Phono Preamp for Turntable, Preamp with RIAA Equalized Low Noise Moving Magnet A/D Converter (Power Adaptor & USB Cable Included)

  • ✅The Dynasty ProAudio UA2D has the ability to be connected with all kinds of turntables with moving magnet (MM) cart- ridge or line level audio devices (tape recorders etc. ), easily transfer and convert from your favor albums vinyl records to your computer or laptop into a digital format file for organization..
  • ✅High performance USB audio interface Integrated, built-in with a premium circuit technology and components phono preamp that allow you to amplify an RIAA equalized low noise Phono and Line level audio signals. Simply connect it to your desktop and laptop computer’s USB port for recording with true-to-original sound and no quality loss..
  • ✅The Dynasty ProAudio comes with USB audio driver technology that ensures latency free operation to a new level, which supports 48/44. 1 KHz sampling rate for both monitoring and recording..
  • ✅Can be used as a Phono preamp for any vinyl playback system, amplifies the signal from your turntable to levels that allow you to connect it to your sound system..
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AudioQuest Dragonfly USB Stick DAC Bundle with AudioQuest USB-C/A Adapter - Cobalt

  • This bundle includes (1) AudioQuest DragonFly USB DAC and (1) AudioQuest USB Adapter.
  • USB Stick–Sized Digital–to–Analog Converter.
  • 32–bit ESS 9010 DAC with minimum–phase filter.
  • Drives headphones directly and connects to preamp or AV receiver.
  • 1.2 Volt Medium output with 32bit processing.
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UpBright 9V AC/AC Adapter Compatible with Art Tube MP Studio V3 Preamplifier Variable Valve Voicing Tube Microphone Mic Preamp TubeMPSTV3, AQualities MA410910 Class 2 Transformer 9VAC Power Supply

  • AC Input Voltage: 110V-117V-120VAC 60Hz or 220V-230V-240VAC 50Hz Suitable Input Voltage For Your Country/Area.
  • Tested Units. In Great Working Condition.UpBright 30 days money back guarantee. 1 full year service warranty..
  • UpBright New 9V AC / AC Adapter Compatible with ART Tube MP Studio V3 Preamplifier Variable Valve Voicing Tube Microphone Mic Preamp TubeMPSTV3, AQualities MA410910 Class 2 Transformer 9VAC Power Supply Cord Cable PS Wall Home Battery Charger Mains PSU.
  • Fits: ART USB Dual Tube Pre Preamp Computer interface Power Supply.
  • ART Tube MP/C Single Channel Tube Preamp Compressor Power Supply.
  • 9V Maxim MA Series MA410910 MA480908 MA480915 Class 2 II Transformer 9VAC Power Supply (with Barrel Round Plug Tip).
  • x0xb0x 2 Mode Machines xoxbox2 MKII Power Supply.
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Rockville RPA70WBT V2 1000w 2-Ch USB Bluetooth Karaoke Amplifier/Mixer+ 2 Mics

  • Rockville RPA70WBT 19" 1000 Watt 2-Channel USB and Bluetooth Karaoke Receiver/Amplifier/Mixer with 2 Wireless Microphones..
  • 19" rack mountable (removable rack brackets) digital hybrid amplifier/receiver. RMS Power @ 4 Ohms: 125w x 2. Peak Power @ 4 Ohms: 500w x 2. RMS Power....
  • THD: > 0.1%. Input Sensitivity: 400mv/33 KOhm. Frequency Response: 20 Hz - 20 kHz. Signal to Noise Ratio: 80 dB. Tone Characteristic: 100Hz-10KHz....
  • Rear Inputs: RCA, Optical, Coaxial . Rear Outputs:. Preamp output for an external additional amplifier or powered speaker. Sub preamp output to....
  • Record output to mixer. Includes 2 wireless VHF mics with digital display and on/off switch (very high quality mics. Significantly better then our V1....
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P1 Bluetooth 5.0 GE5654 Vacuum Tube Preamplifier Hi-Fi Valve Headphone Amplifier Wireless Receiver Audio Decoder Preamp USB DAC APTX-HD [Upgrade]

  • Douk Audio P1 Preamp has been acclaimed by countless audiophiles worldwide, now we upgrade 6J5 to JAN5654 / GE5654 tubes according to many audiophiles' feedback, the sound quality will be greatly improved..
  • With 3 kinds of audio input(Bluetooth/USB/RCA) and 2 kinds of output(RCA/3.5mm headphone), P1 can be used as HiFi tube Preamp, USB DAC or headphone amp with HiFi clear, warm, dynamic, sweet tube sound, bringing extremely high-quality listening experience..
  • Bluetooth 5.0 (QCC3034) supporting APTX-HD lossless transmission. PC-USB (CM6642) supporting 24bit 192KHz and compatible with Windows/Mac/Linux system, matching well with many audio devices such as iPod, Phone, MP3 players, TV, Blu-ray players, Echo Dot, CD players, etc..
  • Adopting NE5532 op amp+classic 47 headphone amp architecture which can drive 32-300 ohms headphones, and a bypass switch is specially designed to turn on/off the tone control, more convenient to enjoy original sound or obtain more delicate sound with treble and bass control knob, adding much fun and higher playability..
  • Exquisite appearance with proper size, blue and orange light decorating vacuum tube, makes it fashionable and attractive, bringing wonderful auditory and visual enjoyment, very suitable for home and desktop audio sy....
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USB Audio Interface for PC-Kmise 2i2 Audio Equipment Computer Recording Sound Card,High Compatibility,Studio Quality Recording for Live Streaming Podcasting

  • 2 in 2 out USB-C audio interface,Plug and Play,No external power required.Built in 48V Phantom power for condenser microphone..
  • Audio Interface 2i2 devices will provide great dynamic range for audio low noise and distortion. 24-bit/192kHz resolution for professional recording and monitoring to your Mac / PC.
  • Built in headphone amplifier for loud , detailed , low-noise monitoring.Switch on the Direct Monitor button to monitor the input signals of your mic, instrument, and interface with zero latency.
  • The mic preamp of Kmise Audio Interface accepts higher input levels,the gain impedance of the preamp on each channel can be individually fine-tuned on each channel, with excellent clarity and definition when recording with quality microphones to meet the greatest demand for vocals and many acoustic instrumentals..
  • USB audio interface has LEFT and RIGHT 3-pole (TRS) 1/4" (6.35 mm) jack sockets,TRS balanced output for high quality audio output without hum or interference..
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