ReviewsAudio Preamp Circuit

6J1P-EV Matched Pair 7-Pin Vacuum Tube = Upgrade for JAN 5654W / CV850 / 6AK5 / 6AK7 / 6J1 / 6J1P / EF95 / 6F32 Soviet Military for Little Dot Amp III IV and Little Bear etc amps

AUX / Bluetooth Audio input Manual switch mode, See the product description for more details,Use DC12V/1.5A power supply(Do not use a power supply....
This is Bluetooth 5.0 tube preamp,With Bass and treble,Sound great,Satisfies your need for more sound quality! Great Warm Smooth Sounding! Let you....
Using the classical tube 6j1 design for easy replacement,soft voice.Adopt the Dual run amplifier chip NE5532P power conversion module.
All aluminum alloy shell,heavy gold PCB,Build quality is surprisingly solid,Nice touch!The power circuit is completely separate from the audio....
NOTE:This is a preamplifier,not a power amplifier or phono preamp, can't be used for turntables.(More technical support and help,pls ask....

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Phono Turntable Preamp, Phono Preamp for Turntable, Record Play, Mini Electronic Audio Stereo Phonograph Preamplifier with RCA Input, RCA/TRS Output, Phono Preamp with 12 Volt DC Adapter

Convert Phono Signal：The Turntable Preamp Converts phono signals to line level for better sounding audio and volume.This state-of-the-art phono preamp can accommodate all magnetic pickups.
Low Noise Operation: The Turntable Preamp offers outstanding performance with it’s Low-Noise Audio Operational Amplifiers.Make your vinyl records deliver sound exactly as it’s read from your turntable’s needle.
RCA Input & RCA /TRS Output: This Mini Preamp has stereo RCA inputs , stereo RCA and TRS outputs. Connect the turntable to the RCA inputs and ground Then, connect the amplifier receiver to the RCA/ TRS outputs(DC 12V Adapter is included).
Simple Plug & Play:Connect any Phono Turntable Preamps to modern sound equipment without specialized phono input for amplifying music.Simply hook up the preamp to both turntable and audio device so you can enjoy vinyl in no time.
1 Year Warrranty: DIGITNOW guarantee this Electric Phono Preamplifier with both a 30-day, no hassle money back return policy and a 1 year manufacturer’s guarantee.

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1 pc OPA1611 Module Low Power Precision op amp Audio Dedicated Audio Amplifier

Name: Low Power Precision Operational Amplifier Audio Dedicated Preamp Size: 50mm X 50mm Supply voltage range: up to ±18V.
Can be arbitrarily changed to positive amplification, reverse amplification, shooting with the integration circuit and other forms. The OPA1611 is ultra-low noise and is a powerful audio system..
The main features Excellent sound quality Ultra-low noise: 1.1nv/vHz at 1kHz Ultra low distortion: 0.000015% 1kHz High conversion rate: 27V/H Bandwidth: 40MHz (G=+1) Open loop gain: 130dB Unity gain stability Low quiescent current: 3.6 per channel Rail-to-rail output Wide Supply Range: ±2.25V to ±18V.
Application Professional audio equipment Analog and digital mixing console Audio Test and Measurement Preamplifiers microphone Broadcast recording equipment High-end A/V receiver.
The opa1611 bipolar input op amps achieve a low 1.1nv/VHz noise density at ultra-low distortion Hz of 0.000015% at 1kHz. The opa1611 provide a rail-to-rail output swing with a 2K2 load at 600mV, thereby increasing headroom and maximum dynamic range..

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Syba SI-PEX63096 6-Channel DAC for AC3 5.1 Channels 4PIN Connector Retail

...AC Adopts the Texas Instruments NE5532 high-performance operational amplifiers chip combining excellent DC and AC characteristics. Q4 features very low noise, high output-drive capability, high unity-gain, and maximum-output-swing bandwidths, low distortion, high slew rate, input-protection diodes, and output short-circuit protection.Q4 has specified maximum limits for equivalent input noise voltage..
160mW RMS(32 ohms, 20 Hz - 20 KHz, 0.01% THD), with bass and treble control Q4 can be used as preamp or volume controller for your PC/Computer/MAC/headphons/speakers system. Easy to set up. No special software, app, or driver to install, a true plug-and-play digital audio adapter..
Mini compact D/A converter, full metallic shell to ensure high quality. Stream bit-perfect 24bit/192KHz HD with low jitter, with output protect circuit, safe for your expensive audio system..
What You Get: Q4 USB DAC x1, USB charging cable x1, optical cable x1, PC-USB to type B cable, User Manual x1, our worry-free 18-month warranty, and friendly customer service..

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Phono Turntable Preamp, Moukey Stereo Mini Preamplifier,RCA Input, RCA Output for Vinyl Record Player, Low Noise,Independent Knob Control Operation, with DC 5V Adapter-MPAMP1

...ifiers. Hooking up the preamp to the turntable and audio device(for example, power amplifier), and then connect the power amplifier to the speaker, you can enjoy better sound and less distortion..
【Converts Phono Signals】Turntable preamplifier, which can convert sound signal into line level signal, this advanced circuit sound preamplifier, input sensitivity electromagnetic pickup..
【DC 5V Power Supply】This product uses the latest DC 5V power supply mode, so no longer restricts the application scenarios. Note: Please use an external power supply with CE or UL certification, and stay away from the interference source, otherwise it will cause noise and other undesirable interference to the product..
【Double Gain】Considering that the signal of the phonograph is relatively weak, our company has added a set of gain adjustments for the input and output, so that the sound volume of the phonograph can be perfectly played. NOTE: This product must be used together with a power amplifier..

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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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GOgroove Phono Preamp Pro Preamplifier with RCA Input/Output, DIN Connection, RIAA Equalization, 12V DC Adapter - Compatible with Vinyl Record Players, Turntables, Stereos, DJ Mixers

COMPACT DESIGN fits on your bookshelf, desk, table so you can connect your turntable to your stereo receiver, speakers, or other audio device in any spot | LIGHT INDICATORS FOR SIGNAL AND SIGNAL CLIP.
IMPROVED, HIGH-END CIRCUIT now converts turntables phono sound quality to line level for less distortion with better sounding audio and volume.
RCA & DIN CONNECTION hooks up to record players for smooth audio with vintage records | PLUG IN YOUR HEADPHONES to the 1/4 connector to the headphone port (use the monitor level knob to adjust volume).
EASY TO SET UP OUT OF THE BOX for a simple hook up the preamp to both turntable and audio device so you can enjoy vinyl in no time | SWITCH OFF THE POWER BUTTON when the pre amp is not in use.
RIAA EQUALIZATION boosts the volume signal for balanced, clear audio | FILTER BUTTON rolls off the low end and helps eliminates rumble | BACKED BY 3 YEAR MANUFACTURER'S WARRANTY.

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Douk Audio T3 PRO MM Phono Stage Preamp Mini Stereo Vacuum Tube Preamplifier

With MM signal input and 3.5mm AUX input(with priority), can be used as a MM phono preamp and a tube preamp, compatible with many audio devices such as MM record player, phone,TV, MP3 players, CD players, DAC, computers etc. to satisfy different demands..
Reasonable curcuit layout and concise wiring to ensure HiFi clear sound with low noise, adopting 2PCS 6A2 vacuum tubes(can be replaced by 6K4 / 6J1 / 6J4 / GE5654 / 6AK5 / 6*1n) to make sound warm, dynamic and sweet, bringing extremely high-quality listening experience..
With gain adjustment switch(OFF-39dB-42dB-45dB), convenient to match better with different audio signals, the front panel are machined with wire drawing and frosted technology, looks more fashionable and distinctive..
Mini size with exquisite appearance, aluminum alloy chassis with better shielding performance and gold-plated terminals with lossless transmission, perfectly suitable for MM record players and other audio sources..
Notice: this is only a preamp, which needs to be used with amplifiers or active speakers..

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ART Precision Phono Preamp

Connect any turntable to a wide variety of audio systems. Perfect for DJs and vinyl enthusiasts.
Moving Coil/Moving Magnet switchable input.

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VINCENT Audio SV 500 Hybrid Integrated Amplifier - Black

Inputs: 4 x Stereo RCA, 1 x Optical, 1 x Coax.
Outputs: 1 x Stereo Rec Out, 1 x Stereo Pre Out, 2 x 3.5mm Jack (Power control), 1 x pair of speaker connectors.

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VINCENT Audio SV 500 Hybrid Integrated Amplifier - Silver

Inputs: 4 x Stereo RCA, 1 x Optical, 1 x Coax.
Outputs: 1 x Stereo Rec Out, 1 x Stereo Pre Out, 2 x 3.5mm Jack (Power control), 1 x pair of speaker connectors.

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