Little bear tube

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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. The circuit adopts dual op amp parallel output, with higher output power. B4-X has 3. 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.

Little bear tube

We independently review all our recommendations. Purchases made via our links may earn us a commission. They produce a wide range of stereo amplifiers , headphone amplifiers , DACs , phono stages and preamps, with an emphasis on vacuum tube components. The product lineup is a super-interesting array of unique audio doohickeys and gadgets, and it exemplifies a fascinating side of Chi-Fi. High tech components with eye-catching features at puzzlingly low prices. Devices that would likely never get manufactured anywhere else. Today we will be looking at a perfect example of this phenomenon, the Little Bear B4-X. So, what makes the B4-X portable headphone amplifier so interesting? For sound quality, the B4-X actually exceeded my expectations, but in most other ways, it simply gave me what I expected. I expected compromises, and sure enough, the Little Bear B4-X delivered. The differences between the B4 and the B4-X include:. Douk Audio also offers the B5 portable tube headphone amplifier. While the B4 and B4-X share the same physical casing, the B5 is slimmer and lighter. Battery life and durability are also reportedly improved. The OpAmp chip is non-replaceable in the B5 model.

The replacement arrived and it was quite alright sound wise for something that you listen without paying attention to music, little bear tube. I gotta give it a whirl" turned into a great little tubeamp which is much better than the price or printing on the case shows. I swear the clarity has improved dramatically.

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Based upon a series of children's books, a grizzly cub has many misadventures with his friends. Little Bear : Hmmm Sign In Sign In. New Customer? Create account.

Little bear tube

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Prompt and courteous customer service. Search titles only. If no help, please contact us. Availability of support options differ by product and country. Follow along with the video below to see how to install our site as a web app on your home screen. Fine little device. Shipping details on the parcel packaging have to be clearly visible. Search our store. Therefor, when putting the top of the case back on, I left a little bit of extra space for the opamps but not screwing it fully in — and vice versa, I left extra space on the opposite side for the bottom of the case. To initiate the return shipment, kindly send an email to support Linsoul. Keep in mind that the B4-X is an amplifier only. Calculate shipping rates Cancel.

Vinyl Restart. I recently bought a Little Bear T7 tube phono preamp.

So enough of all that volume info. Battery life is great and the product is well built It surprised me that a little opamp can make such a difference. These Ohm, dB headphones are clearly far beyond the recommended Ohms supported by the B4-X. Did I forget to mention that the amp is completely unusable while charging? The shortest listening session was 1 hour and the longest 5 hours. Prompt and courteous customer service. Submit Feedback. That's normal. Sorry, there was a problem. Log in Register. So armed with some small Allen Keys, some tweezers and a shaky hand, I got going.