MOFI P Aleph P1.7 Cl-A Mosfet Balanced Pre-Amplifie DIY KIT & Finished Board

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DIY KIT Project

To complete this project, high level knowledge of electronics and rich experience in terms of and testing are required.

Due to time zone and language communication restrictions, we can only provide limited technical support, and you need to solve probl by yours.

We do not provide information other than the product introduction page.

MOFI P Aleph P1.7 Cla-A Mosfet Balanced Pre-Amplifie Project

It is based on the core circuit of the Pa.Lab Aleph P1.7 Pre. Amplifier.

Tech highlights:

Fully Discrete .

Fully Mosfets Cla A.

Monarual design.

Single-Point grounding, ground resistance is close to the

0.02 , low noise design.

More cost-effective sound modification potential.

Input resistance: 22K

Maximum input voltage：4.8VPP

BalancedGain: 7X

Unbalanced Gain 3.5X

THD:0.02%

SIZE: 102x218x1.6mm1oz Cu, HASL with lead （1 ）

Power requirements：

AC48-60,I≥0.1A    1

Product configuration

DIY kit: Contains the and the components needed on the , but does not include the power nsformer .

Finished board: Based on the well-tested board on the standard version kit, we verified all key points' voltage, and used the signal and oscilloscope for og waveform double verification. We will not use this board for listening test.

All finished s are all carefully hand-soldered and fully tests, so the price is higher and le cost performance. Price-sensitive consumers but with have DIY ability are recommended to choose the kit.Schematic & key point of debuing comes with component s for easy installation.We only refer the schematic of the amplification part of the circuit. If you need full circuit , please read the component value with the by yours; we do not provide additionally.please keep test point voltage close enough to it, +-20% is also permitted

DIY KIT InstructionsSince the holes are plated through, you only need to solder the parts from the bottom of the board. Do not or enlarge the holes because that would damage the through-plating.Clean both sides of the blank with paper towel and isopropyl or electronics flux remover, then solder the components to the board, starting with the lowest profile parts.e sure the correct part goes into each position on the circuit board. Measure each with your multimeter to ensure it's the proper value.Clean up the solder flux residue from the board with isopropyl (or electronics flux remover) and a brush.nspect all solder connections carefully, using a magnifying gla, to e sure there are no solder bridges or cold solder joints. Use a multimeter in s scale to check for short circuits. As a minimum, you should verify that the V+ DC are not shorted to ground, or to each other, and that the output pad isn't shorted to ground. Correct any mistakes before proceeding to the next phase.Parts list