Top Op Amps Reviews

Little Bear B4-X Portable Dual-Mono Vacuum Tube Headphone Amplifier; Mini Balanced Audio Headphone Amp B4 Upgrade Version

...B4-X: ① B4-X is a dual-mono balanced version. Its left and right channel are amplified by independent components, and power supply, tubes, and op amp are all independent and symmetric. So the degree of sound separation is higher than B4..
② B4-X adopts 2 groups of independent power supply(+12V and -12V) for 2 op amps, less mutual effects and can drive 300Ω headphones. ③ The circuit adopts dual op amp parallel output, with higher output power. ④ B4-X has 3.5mm and 2.5mm 2 kinds of output interface, suitable for most of balanced and standard headphones..
Mini size and unique design: built-in tube makes you have a tube amplifier which can be held by one hand, convenient to carry and can enjoy HiFi music everywhere. Full, delicate and soft sound: warmer than transistors, independent op amp and power supply inhance the SNR and degree of separation, less interplay and higher sound quality..
With built-in battery protection circuit: battery lets your listening feast without time limitation. It can't be turned on during charging and will power off automatically after fully charged, and charger LED will turn to green..
High-end making material and craft: using gold-plated socket, original nichicon electrolytic capacitor, original DALE resistors and ....

Check Stock

Douk Audio G5 100W Bluetooth 5.0 2 Channel Amplifier Mini Digital Class D Stereo Audio Power Amp Wireless Receiver Black

Besides standard 3.5mm AUX input, it also supports Bluetooth 5.0 to achieve faster and more stable transmission. Compatible with most home audio....
Adopting TPA3116 chip whose max output power can reach 50W*2 @ 4 ohm, no audible noise and pop even at high power output, default 19V power supply is....
Adopting Qualcomm 3003 Bluetooth chip, and 2PCS NE5532 op-amp are used, plug-in type design makes it easy to be replaced by different op amps.....
Simple design without any redundant functions to ensure purer and more natural sound. Mini size with exquisite appearance looks more fashionable, very....
Prompt and courteous customer service. For any questions, please contact us on Amazon..

Check Stock

FiiO A5 Portable Headphone Amplifier Black

Utilizes MUSES02 & LME49600 op amps, resulting in near-zero distortion at .00003%.
USB 'smart-charge' circuit allow charging from laptop/PC, tablet or smartphone.
1 year warranty, 6 month battery warranty.

Check Stock

Keeley Bassist Compressor and Limiting Amplifier Pedal

Built around the exotic and extremely high fidelity that Corp. 4320.
Very affordable studio-grade compressor in stomp box format.
High performance voltage controlled amplifiers, on board true-rms detector, and ultra High performance op-amps to bring you the very best quality.

Check Stock

Parasound Zphono XRM MM/MC Phono Preamplifier

Dual inputs for two turntables (1 MM & 1 MC), Front panel mono/stereo mode switch.
Balanced and unbalanced outputs, Variable MC impedance adjustment of 50-1050 ohms.
MM Gain options of 40 dB or 50 dB unbalanced (46 dB/56 dB balanced).
MC Gain options of 50 dB or 60 dB unbalanced (56 dB/66 dB balanced).

Check Stock

Douk Audio U3 Headphone Amps, Mini Hi-Fi Amplifier for Home Desktop PC 6.35mm / 3.5mm Headsets, Class A, RCA Input, DC 5V

...ical op amp and transistor expanding current circuit, using 1300mA large current output transistor working in class A status, with ultra-low distortion, and the sound is warm and delicate, full and mellow..
Pluggable op amp socket design, convenient to upgrade different op amps and bring much DIY fun and playability for audiophiles. Smooth and mellow sound, suitable for listening to vocals or string music, classic or pop music, and even with unique charm when playing rock..
Mini size with exquisite appearance and most cost-effective, brings big surprise for all audiophiles, easily to drive most headphones in the market, providing larger power, better sound field and details, very suitable for home/office desltop audio system use..
With strong drive power, easily to drive most high-impedance headphones such as: HD580/HD600/HD650/K701/K702/Q701/DT880/T70/T90/SR225/SR325/RS1e.

Check Stock

EVGA Nu Audio Card 712-P1-AN01-KR Lifelike Audio PCIe RGB LED Designed with Audio Note

Audio-grade components deliver lifelike Audio.
Engineered by EVGA and audio Note (UK), Ltd..
Ambient RGB lighting, switchable op-amps.

Check Stock

FiiO E9 Desktop Headphone Amplifier and Dock for E7 USB DAC

Two channel power output, with jacks for both 1/8(3.5mm) and 1/4(6.35mm) headphones.
TI TPA6120 current feedback power amp with low noise, low distortion and high switching rate.
Soft on/off with sealed relay protects power amplifier output.
Smooth and low noise ALPS sealed potentiometer for volume control.
Audio buffers using ultra-low distortion and low noise Burr-Brown OPA2134 op amps.

Check Stock

Topping D50s USB DAC HiFi Audio Decoder XMOS XU208 2 x ES9038Q2M DSD512 32Bit/768kHz USB/Opt/Coax Desktop DAC (Black)

Efficient Decoding Capability：USB of D50s supports highest DSD512 and PCM 32bit/768kHz.COAX and OPT of D50s supports hightest PCM 24bit/192kHz and DOP DSD64..
Powerful Chip Combination: Customized Thesycon driver + XMOS XU208 + 2 x ES9038Q2M + 3 x OPA1612 for DAC..
DSD64-DSD512(Native), DSD64-DSD256(DOP)..
Multiple Output Methods:TOPPING D50s is a high performance desktop DAC with USB, coaxial, optical input and Line Out output..
The OPA1612 and LME49720 op amps form the L50s of the D50s, ensuring lossless transmission of signals. (The LME49720 op amp is equipped with an outlet.) Any question, please feel free to contact us..

Check Stock

FiiO E9 and E7 Bundle Desktop and Portable Headphone Amplifier with USB DAC

Includes powerful E9 desktop headphone amplifier and portable E7 headphone amp and USB DAC.
Ultra low noise and low distortion with enough power output to drive 600Ohm headphones.
Smooth and low noise ALPS sealed potentiometer for volume control.
Audio buffers using ultra-low distortion and low noise Burr-Brown OPA2134 op amps.
High accuracy USB DAC for optimal music playback from a computer.

Check Stock

Try Not to Drown feat Duncan Mackay

UNCOMPROMISED PHONO AMPLIFICATION AND EQUALIZATION - Precisely converts the turntable phono signal to line level, featuring an ultra high-accuracy....
SOPHISTICATED CIRCUIT DESIGN ENGINEERED WITH PREMIUM COMPONENTS - High accuracy components, low noise power supply, and low impedance output stage....
VIVID STEREO SOUNDSTAGE - Utilizing individual left and right channel OP amps provide optimal channel separation and virtually no crosstalk during....
LOW FREQUENCY RUMBLE FILTERING - This selectable high pass filter rolls off the low end frequencies below 20Hz. This slow gentle roll off is helpful....
PROTECTED FROM ANY ELECTRONIC INTERFERENCE - Internal metal shielding enclosure to block electro-magnetic interference and electronic noise.

Check Stock

Douk Audio U5 Mini Fully Balanced Headphone Amplifier for XLR / 4.4mm Headsets

【Pure analog design to reproduce music truly】Pure analog amplification circuit and analog control, show you the truest sound, all aspects are in the top-class such as sound field, sound position, details etc.. Adopt original JRC4580 classical op amp, pluggable socket design, convenient to upgrade different op amps to enjoy other sound styles..
【Most cost-effective amp on the market】Mini size and exquisite appearance, and with low distortion, high power and a pure, uncolored sound, you’ll experience subtle details and shocking swings in your music effortlessly. U5, the best helper for all xlr/4.4mm headphones to improve their sound quality..
【Warm Tips】Without DC 5V power adapter, you can use your phone charger, input over 5V will result in damage..

Check Stock

Mini Stereo Line Level Booster Amplifier Audio Preamp 20dB Gain Volume Control

... wide input voltage that can share the power supply of amplifiers, while L1 can always work at a high voltage of 26V to provide ±12.5V high output amplitude and max 20dB high gain..
Unique design and HiFi clear sound: double-side PCB design, NE5532P op amp with pluggable socket design, convenient to change other op amps to enjoy different sound and bring much DIY fun for audiophiles. High-qaulity sealed potentiometer, with wide frequency bandwidth and excellent dynamic response, the sound is smooth and natural, warm and delicate with ultra-low distortion..
Mini size with exquisite appearance, compact and all-metal design for durability and shielding the electronics from electromagnetic interference with noise rejection. Perfect design in size and function, suitable for many scenarios to increase the output level, such as home stereo system, mixer or speaker setup, karaoke, audio recording, party, live stage event etc..

Check Stock