Alembic Tube Preamp Schematic

Rosmalen nl has thanked. Some may ask if the frog fx1 tube preamp for guitar and bass guitar is a clone of the venerable alembic f2b tube preamp. Alembic like state variable and sallen key filter preamps lovepedal eternity phase 100 brown source fuzz face flipster alembic f2b tube preamp opamp and fet buffers loads of speakercabinets and ampracks busy building a modular synth ssm2044 vcfs preamps adsr s vco s vca s location.

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The models the f 1x and f 2b tube preamps give you everything you would expect from alembic.

Alembic tube preamp schematic. The high voltage shown as 314v on the psu schematic connects to b on the preamp schematic. The sf 2 can either be used as a preamp or as a stand alone tone processor. The classic stereo f 2b remains largely unchanged after 30 years of continuous production. The models the f 1x and f 2b tube preamps give you everything you would expect from alembic.

The answer is yes no or maybe. The vintage tube warmth intuitive bass mid treble controls super low noise floor and precision engineering make these the finest preamps in the world. It is high quality 1 6mm board with 2 ounce copper traces double the normal printed circuit boards with gold plated solder pads. It is normally used as a stereo preamp to interface stereo instruments to power amplifiers.

The sf 2 can either be used as a preamp or as a stand alone tone processor. Circuit detail two input jacks provide the same functionality as found on the f 2b preamplifier. Our f 1x is the mono version of our classic f 2b with some extra features like direct output and a built in effects loop. Jacks are provided on the rear for outputs from each channel.

Class a vacuum tube preamp based on the fender dual showman preamplifier section which inspired the alembic f2b preamp. The input is buffered by a cathode follower tube circuit which is a unity gain impedance matching amplifier to feed the guitar level effects loop. The low voltage shown as 5 6 6 3 or 12v on the psu schematic connects to the vacuum tube pins 4 5. That is not shown on the preamp schematic but you can see it in the pcb layout.

The amplification is entirely vacuum tube powered. The vintage tube warmth intuitive bass mid treble controls super low noise floor and precision engineering make these the finest preamps in the world. Here is a little history of the tube preamp circuit that is used in the alembic f2b tube preamp and the frog fx1 tube preamp that may help you decide. In addition a mono output jack is provided which combines both channels when the f 2b is used with a mono power amplifier.

Finally all the ground points are connected together. Alembic preamps are made to the same exacting quality standards as our stringed instruments.