Top 10 Bravo Audio V2 Class A 12AU7 – Headphone Amps

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1. Bravo Audio


Bravo Audio V2 Class A 12AU7 Tube Multi-Hybrid Headphone Amplifier

Bravo Audio #ad - Parallel 3. 5mm and RCA stereo inputs. Gain control with Japanese ALPS potentiometer. Includes high-quality Shuguang 12AU7 tube.
BrandBravo Audio #ad
ManufacturerBravo Audio #ad
Height3.11 Inches
Length1.73 Inches
Weight1.1 Pounds
Width3.11 Inches
Part NumberV2



AptX Adaptive, Qudelix-5K Bluetooth USB DAC AMP with LDAC, AAC Dual ES9218p 3.5mm Unbalanced & 2.5mm Balanced Output, aptX HD

QUDELIX #ad - Plastic body black with anti-scratch uv coating / aluminium Clip Dark Gray / 52. 8h x 26. 7w x 15. 6d mm including Clip / 25g. Dual es9218p hifi dac 2. 5mm balanced 4v rmS 3. 5mm unbalanced 2V RMS. 500ma li-po battery / 6~20 hours streaming. Qualcomm qcc5124 bluetooth chipset hfp / a2DP / HSP / avrcp ldac / aptX Adaptive / aptx hd / AAC. Bluetooth and usb dac 96KHz/24bit with embedded double-precision equalizer.
BrandQUDELIX #ad
ManufacturerQudelix,Inc. #ad
Height0.61 Inches
Length2.07 Inches
Weight0.06 Pounds
Width1.04 Inches
Part NumberQudelix-5K

3. INFI Audio


INFI Audio Hybrid Class AB Tube Amplifier Power Amp with Bluetooth Home Audio HiFi Stereo Receiver Integrated Amp AUX Bluetooth USB Optical Coaxial for Home Theater

INFI Audio #ad - Stereo input&output: super powerful extension, u disk, dvd player, smartphone, pc, multiple audio sources. Exquisite materials: power amplifier used Aluminum and Metal casing which provided stronger protection.

Metal cutting knob for more delicate control. Front panel has independent Treble/ Bass/ Volume adjustment Knob. Perfect service: 1year warranty gives you a great shopping experience. Those connection allows you to enjoy the “Tube”Sound. Connectable with cd player, tv by using RCA & AUX, Bluetooth, Optical and Coaxial.100w hybrid tube amplifier: 35w 4 ohm / channel& 50w 8 ohm / channel. If you encounter any problems, please contact our customer service team immediately.

Build-in 6h3n: replaceble with 6n3/56706. 3v, old version build-in 12ax7/12at7/12au7random&replaceble 12v, protection cover removable : the use of thickened steel wire meshed for the tube protection cover not only adds protection of the tubes, but also provides cooling performance and user safety. Supplied with a replaceable tubes.
BrandINFI Audio #ad
ManufacturerINFI Audio #ad
Height5.91 Inches
Length10.24 Inches
Width13.19 Inches
Part NumberINFI Audio-IF-AD05
ModelINFI Audio-IF-AD05



HIFIMAN HE400SE Stealth Magnets Version Over-Ear Open-Back Full-Size Planar Magnetic Wired Headphones for Audiophiles/Studio, Comfortable, Stereo, High Sensitivity, Sliver, Great-Sounding

HIFIMAN #ad - What is a planar headphone? what are its benefits over other designs? Planar headphones feature conductive layers that cover nearly the entire diaphragm, resulting in significantly lower distortion than conventional dynamic headphones. Maximum comfort for hours of listening pleasure Thanks to its newly designed adjustable lightweight headband, the HE400se remains cool and comfortable for hours, even in excessively warm weather.

Hifiman’s advanced magnet design is acoustically transparent, dramatically reducing wave diffraction turbulence that degrades the integrity of the sound waves. The he400se’s high sensitivity makes it the perfect match for low-voltage sources, including portable hi-res. Audio players. The reduced distortion yields pure sonic output that is accurate and full-range.

Acoustically invisible stealth magnet unlike the sound waves created by a conventional magnet, the special shape of Stealth Magnets enables the waves to pass through the magnets without generating interference. A dual-sided high-performance 3. 5mm cable is packaged with a 6. 35mm adapter for maximum compatibility with a wide range of devices. Durable connections the headphone’s drivers are protected by a newly designed casing for enhanced durability and protection from the elements.
BrandHIFIMAN #ad
ManufacturerHIFIMAN Electronics #ad
Height7.09 Inches
Length12.05 Inches
Weight0.86 Pounds
Width10.51 Inches
Part NumberHe400SE

5. Riverstone Audio


Riverstone Audio, Tested/Matched Pair 2 Tubes 7-Pin GE JAN 5654W Fully-Tested Vacuum Tubes, JAN 5654W Platinum Grade Pair, Upgrade for 6AK5 / 6J1 / 6J1P / EF95

Riverstone Audio #ad - Jan electron tubes - Higher Durability and Life. All tubes we must also pass a specialized life test and an audio sound test. Test results are provided with all tubes sold by riverstone audio. Our experienced engineers match vacuum tubes for BOTH plate current and mutual conductance.

The 5654w tubes are noS and were obtained from factory-sealed military surplus boxes. We do not recommend purchasing vintage vacuum tubes unless actual test results are provided with the tubes. Considered one of the best of the 5654 / 6ak5 / ef95 family of tubes for audio use. The best warranty available in the audio tube business. Riverstone audio utilizes the best available equipment amplitrex at1000 to test and match audio tubes. 4 year warranty - buy with confidence - all vintage vacuum tubes sold by riverstone audio are backed by our no-nonsense 4-YEAR warranty.

These vintage US manufactured GE tubes are Mil. The vacuum tubes we sell are 100% tested with documented test results attached to each tube box. Tested and matched pair 2 tubes of low-noise 7-pin nib/nos ge jan 5654w vacuum tubes. Unless specifically permitted by your amplifier manufacturer do NOT SUBSTITUTE FOR ANY OTHER TYPE OF 7-PIN TUBE. Spec.
BrandRiverstone Audio #ad
ManufacturerGE #ad
Part NumberPair (2 pcs) Matched 5654W Vacuum Tubes

6. Singxer


Singxer SA-1 Fully Balanced Fully Discrete Class A Amp XLR 6.35 Single-Ended 4.4 Balanced Pre-Amp Amplifier

Singxer #ad - Support multi-output interface, 6. 35 single-ended, XLR 4-pin true balance, 4. 4 balanced interface; also supports single-ended and balanced output as pre-mode. Ultra-low noise: at low gain, the noise floor is 300nv rms a-weighted 20-22khz tested after amplification by LNA, the direct test value of AP2522 is 066uv, and at maximum output, the SNR and DNR are 147db.

Support high and low impedance output, suitable for high-impedance headphones when high-impedance, low-impedance headphones that require high current can be pushed; freely switch, you can enjoy powerful driving and controlling sound, you can also try loose and calm simulation taste.

Still can maintain inaudible noise floor; Blocking coil, low-resistance flat panel, you can easily connect various earplugs, ultra-high-sensitive earplugs, and even ultra-low-sensitive headphones such as KK. Ultra-low distortion: thd+n -120db @1khz a weighting 20-22khz, when the output is 50mv at low gain, THD+N still has -96db @1khz A weighting 20-22khz. When the gain is low, etc. Supports high and low gain design.
BrandSingxer #ad
ManufacturerSingxer #ad
Part NumberSA-1

7. Fayonny


Amplified Indoor Outdoor Digital HDTV Antenna 320 Miles 360°Reception Range Indoor Antenna-36ft Coaxial Cable Support 4K 1080p All Older and Smart TV-Indoor Outdoor Antenna Amplifier Signal Booster

Fayonny #ad - Free receives 360° signal channels :say no to cable tv and huge bills! enjoy hundreds of free top-rated hdtv programming forever; including ABC, PBS, Univision and more. Tv antenna with built-in amplifierd is compatible with TV converter boxes and hundreds of digital tv. Including the news, cbs, Fox, sitcoms, NBC, kids and sports programs!.

36ft long high quality cable : extra long high performance coax cable ensures Antenna can be placed anywhere in your home for the best signal and the strongest reception. This durable construction eliminates signal interference, increases antenna life and bring excellent signal reception. After sale guaranteed : refund and lifetime warranty! if you have any issues with reception or bad signal feel free to contact us and get a refund or replacement. Our professional service team will provide you the best guaranteed support.

Multi-scene use :powerful tv antenna with built-in amplifier can be used rv, camping, indoor, outdoor, and the new technology of cellular and FM signals can make the picture clearer. Place the tv antenna on a window or wall for the best results. Which promise you enjoy hundreds of Crystal Clear Digital & HD shows even in thunderstorms. Newest design :used indoors outdoors powerful tv antenna with built-in amplifier, and the new technology of cellular and FM signals can make the picture clearer. Place the tv antenna on a window or wall for the best results.
BrandFayonny #ad
ManufacturerFayonny #ad
Height3.54 Inches
Length9.84 Inches
Width2.8 Inches
Part Numbertv5

8. FiiO


FiiO E10K USB DAC and Headphone Amplifier Black

FiiO #ad - Usb connection — connects to your laptop via its micro USB connection, which also provides it with power. Low noise floor — the unit has an optimized low-pass filter and selectable bass boost circuit that are designed for a low noise floor in all states.

Dac chip—the internal dac chip is a pcm102 and can handle pcm files up to 24-bit/96 kHz while improving audio quality via a linear filter, reduced delay and internal silence on changing tracks, and no phase shifts. At the same time, the headphone/line/coaxial up to 24 bit/192kHz outputs make it easier to connect to other equipment.

Unbelievably low noise floor optimized active low-pass and bass circuit designs ensure lower noise floor in any situation, so your music is truly played back faithfully. Portable design — a sleek, brushed aluminum shell and chassis allow for durable, portable use. The usb type-c connector gives the device more compatibility.
BrandFiiO #ad
ManufacturerFiiO #ad
Height3.11 Inches
Length0.83 Inches
Weight0.17 Pounds
Width1.93 Inches
Part NumberE10K

9. Nobsound


Nobsound 6P1 6.8W x 2 Vacuum Tube Power Amplifier; Stereo Class A Single-Ended Audio Amp Handcrafted

Nobsound #ad - Its sound output is full of analog style. This amplifier adopts transformer parallel output to reduce its internal resistance by half and achieve doubled improvement on its power.

This class a single-ended vacuum tube amplifier adopts hand welding to ensure the true reality of the sound quality with headphone amp function ASIN: B076CC92BX. Using antimagnetic transformer covers to shield current interference and achieve much lower static noise. The vu meters and vacuum tubes makes it more elegant and attractive. The bass part is deep and powerful and the vocal part is sweet and intoxicating. It has a classic and graceful appearance.
BrandNobsound #ad
ManufacturerNobsound #ad
Weight15.25 Pounds
Part NumberDJ420 & DJ428

10. Douk Audio


Douk Audio U3 Mini Class A Headphone Amplifier HiFi Desktop Home Stereo Amp DC5V

Douk Audio #ad - Smooth and mellow sound, classic or pop music, suitable for listening to vocals or string music, and even with unique charm when playing rock. 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.

With wide frequency response extension, dc 5-20v wide input working voltage, excellent purity and transparency, the amplifier circuit can always work at a high voltage of 26V, excellent transient response, and good dynamic range. Adopting innovative circuit design, and the background noise index is excellent. Pluggable op amp socket design, convenient to upgrade different op amps and bring much DIY fun and playability for audiophiles. Mini size with exquisite appearance and most cost-effective, easily to drive most headphones in the market, brings big surprise for all audiophiles, providing larger power, better sound field and details, very suitable for home/office desltop audio system use.

Adopting original ti-ne5532 classical op amp and transistor expanding current circuit, using 1300mA large current output transistor working in class A status, and the sound is warm and delicate, with ultra-low distortion, full and mellow.
BrandDouk Audio #ad
ManufacturerDouk Audio #ad
Part NumberXZ-U3