Little Bear B4 Portable Vacuum & Valve Tube Headphone Amplif... - 2024 report by Whydis
Little Bear B4 Portable Vacuum & Valve Tube Headphone Amplifier HiFi for Phone
Color:Black
Parameters: Frequency response range: 0-100K-0.1dB Gold-plated input / output socket NE5532 OP chip (can be upgraded to better OP chips like BB or Muse) Original nichicon electrolytic capacitor TOP HiFi Original DALE resistors Precision...
Every thing works and it sounds great but the front glass came broken and the package was terrible to open
If you are thinking about buying this---do not hesitate, my guess is that this is an introductory price of $70 to bring it to market and will go way up after more people hear it and realize what they have-----THIS thing is AWESOME!!!!!
Being a tube amp it is susceptible to microphonics, turn-on pops, clicks and static and RFI/EMI interference, especially from cell phones but all those things can be worked around to reward you with glorious true high-end HIFI sound
You are reading snippets from reviews of Little Bear B4 Portable Vacuum & Valve Tube Headphone Amplifier HiFi for Phone
(They do glow nicely when the device is on.)- Smooth volume dial with unexpectedly good heft and nice dampening, does not spin too easily like other portable
(They do glow nicely when the device is on.)- Smooth volume dial with unexpectedly good heft and nice dampening, does not spin too easily like other portable
You are reading snippets from reviews of Little Bear B4 Portable Vacuum & Valve Tube Headphone Amplifier HiFi for Phone
This amp excels in the warm lush midrange and smooth clear highs---the bass is "better" with the Oppo---I just eq in more bass when I use the Little Bear
You are reading snippets from reviews of Little Bear B4 Portable Vacuum & Valve Tube Headphone Amplifier HiFi for Phone
After spending a little time and doing a careful comparison between iMac->Grados vs iMac->Tube Amp->Grados, I can say that this actually makes quite a big difference and really improves the sound.
Beyer Dynamic DT770 Pros, and the difference is immense
You are reading snippets from reviews of Little Bear B4 Portable Vacuum & Valve Tube Headphone Amplifier HiFi for Phone
While I wouldn't accuse this portable tube amp of damaging the sound of my music in any way, I really don't find it enhances it either.
However, for a very portable tube amp, it's quite astonishing
I have listened to very expensive tube and Class A solid state amps and this little tube amp comes closer to them than to the myriad of cheap solid state and tube amps that abound
This is my introduction into portable tube headphone amps, so all i have to compare this to is a FiiO Killamanjaro 2 headphone amp
Also, the tubes jingle audibly if the unit is bumped
(I've tried it with IEM's as well as Sennheiser HD 558's, and overall the bass is much more pleasant - it gives the impression of a bass boost, but not as obnoxious or in-your-face as the Killamanjaro's bass boost
(I've tried it with IEM's as well as Sennheiser HD 558's, and overall the bass is much more pleasant - it gives the impression of a bass boost, but not as obnoxious or in-your-face as the Killamanjaro's bass boost
This amp excels in the warm lush midrange and smooth clear highs---the bass is "better" with the Oppo---I just eq in more bass when I use the Little Bear
The little bear did just what I hopped, the bass no longer bleeds into the mids
You are reading snippets from reviews of Little Bear B4 Portable Vacuum & Valve Tube Headphone Amplifier HiFi for Phone
I have listened to very expensive tube and Class A solid state amps and this little tube amp comes closer to them than to the myriad of cheap solid state and tube amps that abound
Now, you can't expect it to be at the price, but it is quite smeary and fuzzy compared to a reasonable solid state amp at the same price or less
I have listened to very expensive tube and Class A solid state amps and this little tube amp comes closer to them than to the myriad of cheap solid state and tube amps that abound
I don't detect (that tube magic, or difference from solid state), but that said its a good little amp
You are reading snippets from reviews of Little Bear B4 Portable Vacuum & Valve Tube Headphone Amplifier HiFi for Phone
More about Little Bear B4 Portable Vacuum & Valve Tube Headphone Amplifier HiFi for Phone
Color:Black
Parameters: Frequency response range: 0-100K-0.1dB Gold-plated input / output socket NE5532 OP chip (can be upgraded to better OP chips like BB or Muse) Original nichicon electrolytic capacitor TOP HiFi Original DALE resistors Precision rings resistance Battery: Lithium batteries, voltage: 12V, 1000mA Charging time: 2-2.5 hours to charging full the battery Working time: 4-4.5 hours Output power: 450mW SNR: 99dB Suggest load impedance: 16-400Ω Color: Black / Silver Size(L*W*D): 115 * 69 * 23 mm / 4.53 * 2.72 * 0.91 in (without knob) Trouble Shooting: Q: Right channel has static
Tried different source and headphones
No help。 A: If there is static noise in one channel, normally it is caused by the tube of that channel
Maybe it has a poor contact after the long shipping process
You can open the chasis and adjust the screw near the tube while listening(contact us and we will give you a photo with marks to help you find it)
Also, there is a small possibility that the tube is broken
You can buy a 5899 tube in local shops, which is very normal to see
And we will refund you the cost
Q: It broke just now four loud pops and it's dead
Very disappointed
A: Mainly because the battery is run out of power
Please charge it
If not help, please contact us
Q: The Amp has a lot of electronic feedback/interference when a cellphone is hooked up to it or nearby
It creates popping in the headphones
A: Vacuum tubes are easy to be interfered by devices that can trandfer siganl like cellphones, routers
Please keep the amp away from them
Q: Won't hold a charge, sounds like something is loose inside
A: The charger is broken
Please contact us to get a new one
Packing List: 1 * headphone amplifier 1 * power supply 1 * 3.5mm audio cable 1 * band
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