Northbear AC 12V 6J1 Valve Pre-amp Tube PreAmplifier Board Headphone Buffer DIY KIT (Case)

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Northbear AC 12V 6J1 Valve Pre-amp Tube PreAmplifier Board Headphone Buffer DIY KIT (Case)


  • FE-6J1-2 tube fever plate pre-amp is the circuit schematic imitation design team Music fax X-10D, to be rational optimization, more stable performance than the original machine, 10% tube set increase.
  • This board uses a single 12 V AC input battery, the processing circuit provides 6J1 tube required positive and negative voltage and voltage supply filament voltage.
  • Energy works: an open tube feeding the filament heating is started, when the impulse from zero-tension start to increase the hot filament tube, etc.also happens to boost boost finish, so this is the same with the 8 * 470 UF capacitor very clean filter, good power supply system will not have a buzzing, the filament is 12 V DC power supply, needs two tube is connected in series with a DC filament filament too in order Reduce noise.
  • Channel Type: 2.0 / Stereo Power Input: AC12V 1A /5.5*2.1 plug
  • Knob Functions: power switch / volume control


See User Reviews And Ratings On Amazon


More Tube Amplifiers To Choose From

Dayton Audio HTA100BT Hybrid Stereo Tube Amplifier with Bluetooth USB Aux Phono in Sub Out 100W
  • Authentic vacuum tube warmth and character with class AB amplifier efficiency produces an articulate and natural sonic experience
  • Powerful 50 watts per channel of audiophile fidelity that is sure to please even the most discerning ear
  • Convenient input connections including USB, optical, coaxial, phono, stereo RCA, and Bluetooth V5
BoyuuRange MT-34 MKII EL34 Tube Hi-Fi Intergrated Amplifier Push-pull
  • Vacuum tube: 5Z4P x1, EL34 x4, 6N1J x3
  • Input jack: CD / AUX / TAPE
  • Output power: 2 × 25W (ultra-linear connection), 2× 15W(Triode)
Audiophile Vacuum Tube Amplifiers - Design, Construction, Testing, Repairing & Upgrading, Volume 1
  • Popovich, Igor S. (Author)
  • English (Publication Language)
  • 290 Pages - 01/29/2015 (Publication Date) - Career Professionals (Publisher)
Willsenton R8 KT88/EL34 x4 Tube Integrated AMP Power Amplifier Headphone (Black)
  • One amplifier can used wiht tube EL34, KT88 or 6550, so, you can get 3 kinds of sound from different models tubes. The default matching tubes of this machine is KT88. If you need another 2 new sets of tubes, please purchase in addition. There is a Red selection button on the Back of the amp to switch.
  • Pure hand-made, Point to point manual welding.
  • Willsenton R8 is an integrated Amplifier, it is a Power Amplifier too (there is a group Power amp input), it is a Headphones amp too.

Last update on 2021-10-05 at 01:12 PST/ Affiliate links / Images from Amazon Product Advertising API

Learn About The Tube Amps And How They Work

Chances are you’ve just bought your first Electric guitar and wish to find out all about guitar amps. Maybe you’re just curious as to how long amps have been around, how they work, or which to purchase. Whatever the reason, by reading this article, you’ll get answers.

History of the Amplifier

Guitar amps have been around for roughly 70 years now, having first appeared during the 1930s. The earliest amps had very poor high treble and bass responses. This was improved over time, as amps became better developed. During the ‘60s, the guitar amp greatly evolved to where it is today when guitarists of that era experimented with deliberately overloading their amp to create Distortion. From that point on, most amps were provided with preamp distortion controls. Playing with distortion has since become an important part of Electric guitar playing

Types of Amplifiers

There are two types of amps: solid state and vacuum tube amps. Additionally, there are some amps that combine both solid state and tube technologies. Most amps, especially the least expensive ones, are solid state because they are lighter and easier to repair than tube amps are. A lot of guitarists, however, prefer the tube amp due to the tube amp’s analog sensitivity, which they claim makes tube amps sound better. While this is probably the case, most beginners can’t afford to shell out the $500-$1000 it costs to buy a good tube amp. That’s why solid state amps are actually a good buy in some cases.

Solid state and vacuum tube amps come in combo (speakers and head) packages or separately. Guitarists who aren’t picky can just buy the combo, while those who are picky can “mix and match” heads and speakers. This is useful for those looking to achieve a certain sound.

How Amps Work/What Watts Mean

Without going into a big, long, technical explanation, amplifiers basically take the vibration (sound) of the string(s) and amplify it, thereby increasing the sound. If you wish to find out more about the technical side of guitar amps, there are several good books that cover the topic pretty thoroughly.

Each amplifier has a certain number of watts. The higher the number of watts, the louder the sound produced by the amp is. Generally speaking, those who wish to play shows will want to get amplifiers with at least 30 watts, preferably at least 50 watts, especially if they plan on playing at larger venues.