Little Bear B4-X Portable Dual-Mono Vacuum Tube Headphone Amplifier; Mini Balanced Audio Headphone Amp B4 Upgrade Version
Little Bear B4-X Portable Dual-Mono Vacuum Tube Headphone Amplifier; Mini Balanced Audio Headphone Amp B4 Upgrade Version
Parameters: Tube: USA RAYTHEON JAN5899 ×2 Op amp: NE5532*2 (can be upgraded ) Lithium Battery: 12V, 1000mA Charging time: 2-2.5 hours Working time: 4-4.5 hours Output power: 450mW SNR: 105dB Suggest load impedance: 16-300Ω Output: 2.5 balanced Jack*1, 3.5mm Jack *1 Size (L*W*D): 115*69*23 mm / 4.5*2.7*0.9 in (without knobs) Packing List: 1× headphone amplifier 1× power supply 1× 3.5mm audio cable 2× band Notice: When using B4-X with your cellphone, if you heard some "zhi ~ zhi" noise in your headphone. Probably it is the inteference from your cellphone such like WIFI or 4G signal, which intefers the tube and cause noise. That's normal. Because there are microphone effect with all tubes. To avoid it, please keep your cellphone far away from B4-X. Q&A: Q: Tried different source and headphones, but the right channel still has static. A: Maybe the tube has a poor contact after long shipping process, open the chasis and adjust the screw near the tube while listening (if you cannot find it, contact us and we will give you a photo with marks to help you). Maybe the tube is broken, you can buy a 5899 tube in local shops. And we will refund you the cost. Q: It broke just now four loud pops and it's doesn't work now. A: Mainly because the battery is run out of power. Please charge it. If no help, please contact us. Q: The Amp has a lot of electronic feedback/interference when a cellphone is nearby. It creates popping in the headphones. A: Vacuum tubes are easy to be interfered by devices that can transfer siganl like cellphones, routers. Please keep the amp away from them. Q: It cannot be charged, something is loose inside the charger. A: Maybe the charger is broken. Contact us to get a new one please.
- ASIN: B07KJ18H75
- Brand: Little Bear
- Manufacturer: Douk Audio
JJ Electronics Amplifier Tube (T-6L6GC-JJ-MP)
JJ Electronics Amplifier Tube (T-6L6GC-JJ-MP)
Octal power tube (Max plate watts = 30w)this Slovakian tube has colorful lows, loose/ easy-going mid body and a brightly shining chime for the highs in overdrive, it offers a tight and focused bite with crisp, bright and well-defined articulation.
- UPC: 609722122795
- ASIN: B003X5HE08
- Brand: JJ Electronic
- Manufacturer: JJ Electronics
Pro-Ject Tube Box S2 Phono Preamplifier - Black
Pro-Ject Tube Box S2 Phono Preamplifier - Black
Pro-Ject's Tube Box S2 phono preamplifier with a tube output stage offers unrivalled performance and unique flexibility at an incredibly affordable price. It's one of the most economical ways to enjoy the lush sound of vacuum tube phono gear that we know of, and the ultra-compact size means that the Tube Box S can fit almost anywhere. The sonic quality of Tube Box S2 is extremely impressive, offering a big improvement over Pro-Ject's great sounding Phono Box S. It makes a big improvement over the built-in phono stage on many amps and receivers and offers a perfect upgrade for most analog hi-fi systems. Tube Box S2 is Pro-Ject's very first product to feature a fully discreet circuit design without using any operational amplifiers (OpAmps). It also is the first product to come with replaceable tubes for tube rolling and sound-shaping. This gives you many options to pick from and alter the sound signature to your preference. Tube Box S2 provides a full and relaxed laid back sound with lush mids, just like you would expect it from a much bigger high end tube phono preamplifier. It offers support for both MM and MC cartridges and comes with many gain settings to be switched on the front panel. Five variable input impedance settings are available to adjust to any MM cartridge. The 47k ohms input impedance setting is fixed and suited for high output MC cartridges. The aluminum/metal casing is adapted to Pro-Ject's DS2 line in looks and protects against vibrations and electromagnetic interferences for superior sound. This is all-in-all a true high end solution in a small package.
- ASIN: B075KPB1P2
- Brand: Pro-Ject
- Manufacturer: Pro-Ject
Nobsound Little Bear T7 Vacumn Tube Mini Phono Stage RIAA MM Turntable Preamp & HiFi Tube Pre-Amplifier (Black)
Nobsound Little Bear T7 Vacumn Tube Mini Phono Stage RIAA MM Turntable Preamp & HiFi Tube Pre-Amplifier (Black)
Notice: As a phono preamp, it is suited for MM turntables only. Do not support MC turntables. As an AUX preamp, it is suited for devices like CD, DAC, PC, cellphone. Please note as a phono preamp, it can only work with MM turntables. Please note your turntable should have no built-in phono preamp. If it has, please make sure there is a PHONO OUT/LINE OUT switch and you should put it on PHONO OUT position. We do not recommend using it with class D amplifiers since most class D amplifiers have much noise. Parameters: 1. RIAA phono part: RIAA freq response 20hz-20kHz +/- 0.5dB, S / N ratio> 85dB THD
- ASIN: B075YQM28P
- Brand: Little Bear
- Manufacturer: Douk Audio
Pair of JJ ECC83s/12AX7 Preamp Vacuum Tube
Pair of JJ ECC83s/12AX7 Preamp Vacuum Tube
TubeDepot supplies vacuum tubes for musical instrument amplifiers, Hi-Fi amplifiers, vintage vacuum tube recording gear and associated equipment. We provide tube sets for virtually any vintage or new production amp on the market.
- UPC: 811660037332
- ASIN: B07BHV3NVK
- Brand: TubeDepot
SUCA-AUDIO Tube-T1 Preamplifier, Vacuum Tube Amplifier Buffer Mini Hi-Fi Stereo Preamp with Treble & Bass Tone Control for Home Audio Player (6K4 Tubes)
SUCA-AUDIO Tube-T1 Preamplifier, Vacuum Tube Amplifier Buffer Mini Hi-Fi Stereo Preamp with Treble & Bass Tone Control for Home Audio Player (6K4 Tubes)
Features: 1.All aluminum alloy shell,heavy gold PCB,gold-plated interface. 2.Provide Warmth, Dynamic,Sweet tube coloration feeling.3.Optimize integrated circuit and high quality power adapter to minimize the noise.4.Tubes detechable and replaceable.5.With Treble and Bass control function, high playability. SOMETHING SHOULD BE KNOW- It is NOT a phono preamp for turntable. To order a PHONO Preamp, please visit B07QBXV3CG.- The preamp need to connect with a power amplifier or active speaker, can not connect with a passive speaker directly.- Low-quality audio lines and power adapter will generate noise as a result.- SENUCN-AUDIO had changed to SUCA-AUDIO Brand, same quality great products. Specifications: Power Supply: DC 12V/2AFrequency Response: 20HZ -20KHZ((±3dB)SNR: 98DBTHD: 0.1%Control：Potentiometer knob and toggle switchTreble adjustment range: ±6dBBass adjustment range: ±10dBAudio Inputs/Audio Outputs: Gold-plated RCAMachine Size: 118.5*98*33mm(4.64 * 3.86 * 1.3 inch) Package Include:1 x Tube Preamplifier2 x 6K4 Tube1 x Power Adapter About the Noise:1. Make sure the RCA cables, the tubes and the adapter are connected well.2. After that, if there's a noise while useing, please change the adapter(12V/1A or 2A) and try again.3. If there still a noise, please contact with us via email. We provide 3 month no asked refund and 12 month guarantee, will make a solution to you.
- ASIN: B07Q656449
- Brand: SUCA-AUDIO
- Size: Tube-T1 6K4
- Manufacturer: SUCA-AUDIO
FX Audio TUBE-01 6J1 Tube Buffer HIFI Preamplifier (Black)
FX Audio TUBE-01 6J1 Tube Buffer HIFI Preamplifier (Black)
Performance: Using classical tube 6j1 design and optimize the route. Tube can be replaced design,soft voice. Patent power conversion module. The first vehicle with DC12V power supply only. All aluminum alloy shell,heavy gold PCB,gold-plated interface. Can match digital power amplifier analog power amplifier,active speakers. Technical: Power supply: DC12V 1A Frequency response: 20HZ(-0.2DB)-20KHZ(-0.2DB) SNR: 100DB Input sensitivity: 300MV-2000MV Output: 3000 mv THD:1000MV 0.1% Size:98x100x32 MM Weight:350g
- ASIN: B01HEQJGPC
- Brand: FX Audio
- Manufacturer: FX Audio
JJ 12AX7 / ECC83 Preamp Vacuum Tubes (Three Pack)
JJ 12AX7 / ECC83 Preamp Vacuum Tubes (Three Pack)
This 12AX7/ECC83 preamp tube has a well-balanced, colorful tone. Strongly defined lows and mids and smooth highs. It allows for more clean headroom than higher gain 12AX7s. Spiral filament for reduced noise & microphonics. Package of 3
- UPC: 609722131322
- ASIN: B005F5TP6U
- Brand: JJ Electronic
- Manufacturer: JJ Electronics
Fosi Audio P1 Tube Pre-Amplifier Mini Hi-Fi Stereo Buffer Preamp 6J1 Valve & Vacuum Pre-amp with Treble & Bass Tone Control for Home Theater System
Fosi Audio P1 Tube Pre-Amplifier Mini Hi-Fi Stereo Buffer Preamp 6J1 Valve & Vacuum Pre-amp with Treble & Bass Tone Control for Home Theater System
Specifications: Power Supply: DC12V 1A Frequency Response: 20HZ -20KHZ((±3dB) SNR: 98DB THD: 0.1% Control：Potentiometer knob and toggle switch Treble adjustment range: ±6dB Bass adjustment range: ±10dB Audio Inputs/Audio Outputs: Gold-plated RCA Machine Size: 118.5*98*33mm(4.64 * 3.86 * 1.3 inch) Package: 1 x Tube Preamplifier 2 x 6J1 Tube 1 x Power Adapter
- ASIN: B07GXBF5JS
- Brand: Fosi Audio
- Manufacturer: Fosi Audio
JJ Electronics Amplifier Tube (T-12AX7-S-JJ)
JJ Electronics Amplifier Tube (T-12AX7-S-JJ)
This tube has a well balanced, colorful tone with strongly defined lows, mids and smooth highs. It allows for more clean head-room than higher gain 12AX7s. In overdrive, it is smooth and strong with well defined lows and Mids. When pushed into overdrive it offers clean distortion with well balanced lows and Mids. The jj 12AX7 is well suited for all types of music and playing styles. It is also highly recommended for studio pre-amps and Hi-Fi gear.
- UPC: 844632022081
- ASIN: B0002M728Y
- Brand: JJ Electronic
- Manufacturer: JJ Electronics