Top 10 Best little bear amplifier in 2021 Comparison Table
- The difference between B4 and 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 precision ring resistance. Prompt and courteous customer service.
- This product can be used as a MM Turntable Preamp or a HiFi Tube Pre-Amplifier and can provide high fidelity and warm sound beyond your expectation.
- Please do not connect T7 to any inferior Bluetooth digital amplifiers except Class T digital amplifiers, since all Class D amplifiers have very loud background noise.
- Its tube(6J1) can be directly replaced with tubes like 5654, 6AK5, EF95 .etc
- Its mini size makes it more portable and be suited for a variety of scenarios and Its alluminum body makes it strong and elegant.
- Upgrades of the new version: ① The gain switch is moved from inside to outside. Customers can adjust its gain more conveniently; ② The circuit is optimized and the noise is lower.
- Not only as a headphone amplifier, compatible with wide impedance range(12-200Ω), but also as a preamp for your other power amplifier, convenient and efficient to improve sound quality.
- 1*3.5 mm stereo jack input, can be connected to computer, CD, mobile phone and lossless player. 2*3.5 mm output can also be connected to digital amplifiers and active multimedia audio devices.
- Default Beijing FU32 vacuum tube, can be upgraded to GU-32/832; Default NE5532 op amp, can be upgraded to OPA2604, JRC4558, OPA2132, OP275 and so on for enjoying different tones.
- Mini size with attractive appearance, compact design makes it suitable for desktop audio system.
- This product uses high quality fully-balanced potentiometers, NEUTRIK XLR, Pro-Singnal RCA. Nobsound never be stingy in the components and materials of our products.
- This prodcut has a small size, while is still euipped with commonly-used interfaces. There is a selection switch which you can choose the fully-balanced or single-ended audio signal mode, as well as the output or input mode.
- This prodcut has no amplifying circuit and won't change the timbre. You can enjoy the most original sound of your active monitor speakers.
- Its clean black appearance suits for almost every usage scenarios.
- Please note this is a passive preamp, which means it has no amplifying function.
- Echo Dot is a voice-controlled speaker that uses Alexa to play music, control smart home devices, make calls, answer questions, set timers and alarms, and more.
- Play music from Amazon Music, Apple Music, Spotify, Pandora, SiriusXM, TuneIn, and iHeartRadio.
- Call or message family and friends hands-free, or drop in from the Alexa App to your Echo device.
- Controls lights, locks, thermostats, and more with compatible connected devices.
- Use the built-in speaker, or for bigger sound, connect to speakers through Bluetooth or audio cable.
- KILLER AUDIO: With crystal highs, crisp mids and rich bass, XSound Go creates an immersive listening experience unlike any other. State of the art bass radiators and dual 8W power drivers deliver shocking sound without distortion even at maximum volume.
- EXTREME WATERPROOFING: Pool parties? Definitely. Lounging on the beach? Absolutely. Singing in the shower? You bet! This waterproof speaker is perfect for all sorts of summer fun.
- SLEEK & SOPHISTICATED: Tribit XSound Go is as stylish as they come. Curved edges and a matte finish offer a modern touch, the compact design maximizes portability. Toss it in a backpack, stick in in your purse, or carry it around with the attached strap.
- ALL DAY PLAY: Keep the music pumping all day (and all night) long. The powerful lithium ion battery guarantees up to 24 hours of continuous use! You'll be able to enjoy your favorite songs whenever (and wherever) you please.
- WIRELESS CONNECTION: Don't let cords tie you down. Premium bluetooth 5.0 technology effortlessly connects to all of your bluetooth-enabled devices up to 100ft range. Press and hold the multifunction button to access the voice input for Siri and Google Now.
- Little Bear T11 is a pure tube phono preamplifier working with MM cartridge turntables only. Please make sure your turntable is equipped with a PHONO signal output instead of a LINE output.
- Little Bear T11 is based on T10 with improvement. Compared to T10, T11 has lower background noise at normal volume. Its sound performance is better with increased liveness.
- Adopting a conventional active RIAA equalization phono stage circuit. There is 3 metal covers and 4 acrylic covers for those tubes. And you will be able to choose which type as you like.
- Supporting 6N2/12AX7 tubes, which offers many replaceable tubes for you like 6H2,6H2n (For 6N2 type) and 12AX7B,6N4(9PIN),ECC83,5751 (For 12AX7 type).
- On the bottom of the description, there is a few Q&A for buyers who might meet the humming problem. If you encounter a similar issue, please check those tips, which have covered most of conditions.
- 【HiFi Sound Quality】: The portable bluetooth speaker has shocking rich bass, large volume without voice break, 360° all around sound effect.Equipped with 10W high-quality speaker. Smooth and supple appearance gives you a great visual experience.High-frequency is transparent and bright sound, medium-frequency is clear and clean and low-frequency reaches pretty low but powerfull with a full sound. It offers a rich sound and an enhanced bass that goes far beyond its size.
- 【Bluetooth 5.0】: A new generation of Bluetooth 5.0 technology, transmitted by A2DP technology, has lower power consumption than Bluetooth 4.2 but with faster transmission,stronger anti-interference ability and more stable signal without any delay. This wireless speaker is compatible with multiple devices such as tablets, laptops, desktop computers, televisions and mobile phones.
- 【Waterproof and Anti-Damage】: Fully sealed design with IPX67 waterproof makes it not afraid of rain.Playing music at ease. You are never alone to sing in the shower with the bluetooth speaker. It is also anti-shock and anti-damage. Even if the bluetooth speaker falls down at 1.5m high, it can still keep intact. It can even be used in harsh environments such as lakes, forests and deserts.
- 【Long Battery Life】: Small in size but large in capacity. Equipped with built-in1800mAh rechargeable lithium battery. Let your enjoy music without being uninterrupted from day to night.Meet your needs throughout the day. Playing at medium volume when fully charged can bring you a 18-hour uninterrupted music journey.
- 【Mini Portable Size】: Small portable Bluetooth speaker can be carried around and enjoy your listening anywhere, adding wonderful experience on your journey. Nylon wear-resistant fabric technology and silicone lanyard are strong and durable, which enables you to hang the speaker on a backpack or bicycle easily. Suitable for leisure, entertainment , office, indoor, outdoor, hiking, beach, etc.
- ✅ HIGH RESOLUTION - Dual Core Burr Brown True Native chipset supports all hi-res audio formats up to PCM 32 bit / 768kHz, DSD512, and MQA (decoder)
- ✅ POWERFUL AMPLIFIER - Up to 4,100 mW headphone amplifier with balanced topology and 4.4mm output. Easily switch between Turbo (4,100mW) /Normal (785 mW) /Eco (265 mW) modes
- ✅ AMAZING SOUND - Ultra-Low noise, low distortion (0.00006%) OV2028 OpAmp, devil bass reproduction, and unbelievable resolution provide an unbeatable experience
- ✅ PORTABLE - Rechargeable battery provides 6-12 hours of listening, or play while charging
- ✅ CONNECTIONS - USB A, S/PDIF digital and optical audio inputs; 6.3mm and 4.4mm headphone outputs
- Please pay attention before buying, We received feedback from many buyers, reflecting that Reisong A10 Amp have not enough power. Please confirm that your speaker is a bookshelf speakers with a sensitivity 89db or more. We don't think Reisong A10 work well with a floorstanding Speaker or the low sensitivity speakers.
- Manual welding, preferred audiophiles, output transformer switch to the 76x40 higher end output transformer.
- If there is no sound from the machine after waiting for a few minutes, Please make sure the power is connected properly. And try pressing the Black Circle Button on the back of the machine (for switching between AUX and CD modes)
- Tube EL34 x 2,6N2J x 2,5Z4PJ x 1
- Reisong Boyuu A10 Amp with tubes protective cover. If you need a circuit diagram, please contact us by email, thank you.
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Our Best Choice: Little Bear T7 Vacumn Tube Mini Phono Stage RIAA MM Turntable Preamp & HiFi Tube Pre-Amplifier (Black)
As a phono preamp, it is suited for MM turntables only. Do not guidance MC turntables.
As an AUX preamp, it is suited for equipment like CD, DAC, Pc, cellphone.
Please notice as a phono preamp, it can only operate with MM turntables. Remember to notice your turntable really should have no constructed-in phono preamp. If it has, please make absolutely sure there is a PHONO OUT/LINE OUT switch and you really should place it on PHONO OUT placement.
We do not recommend employing it with course D amplifiers considering the fact that most course D amplifiers have significantly sound.
1. RIAA phono component:
RIAA freq response 20hz-20kHz +/- .5dB, S / N ratio> 85dB
THD <0.05%, input sensitivity 3.0mV, gain 40dB
Nominal / max output 300mV / 1.8V
Output impedance 200 ohms, input 47k ohm / 220 pF
2. AUX part:
Input voltage: AC12 ~ 18V
Frequency response: 20 HZ – 20 KHZ
Input sensitivity 300 mv
SNR: 96 db
Total harmonic distortion <3% (1 KHZ)
Power range output: 0.2 W
Output impedance: 100K
Input impedance: 50K
0.24Kg (0.55Kg with package)
1 x preamplifier
1 x power supply
2 x 6J1 tubes
It will be better if its GND jack can be really connected to the ground, which can decrease the background noise to a very low level.
For MM turntables, please check whether your MM cartridge is the old version. If so. we suggest you to upgrade it as a new version one will bring much better sound.
Please keep T7 away from devices that can transfer signal like cellphones and routers.
This product can be used as a MM Turntable Preamp or a HiFi Tube Pre-Amplifier and can provide high fidelity and warm sound beyond your expectation.
Please do not connect T7 to any inferior Bluetooth digital amplifiers except Class T digital amplifiers, since all Class D amplifiers have very loud background noise.
Its tube(6J1) can be directly replaced with tubes like 5654, 6AK5, EF95 .etc
Its mini size makes it more portable and be suited for a variety of scenarios and Its alluminum body makes it strong and elegant.
Upgrades of the new version: ① The gain switch is moved from inside to outside. Customers can adjust its gain more conveniently ② The circuit is optimized and the noise is lower.