European 220V - 24V 0.3A linear regulated PS
for this amp are available now!
See my Ebay shop
This is a high quality
desktop headphone amplifier
on the popular CMoy amp design.
NEW Desktop HiFi M2 amp!
New Desktop HiFi M2 headphone amp, compared to my portable amp, are increased sound quality and options due to :
No capacitors in signal path
2 x gold-plated RCA input jacks
Large 6.3mm phone jack
Powered from external PS, 5.5/2.5mm jack
12V-30V DC power supply required (not included)
Aluminum Hammond enclosure
natural anodized and black anodized avilable
Desktop M2 headamp is built on a professional Printed Circuit Board (PCB) designed by
principles used in
audiophile-grade parts are carefully selected for the best possible sound quality
experiments and listening sessions.
The amp is hand built and tested by me, Zigis, in Latvia and shipped
Desktop HiFi M2
amp can greatly improve
the sound quality of
and boost the weak output
Hi Fi stereo
Hi-Fi amps and receivers' headphone out is only a mid-fi option. A Desktop M2 amp,
connected to the line out
of your home Hi-Fi, will out-perform the headphone out in any amp or receiver
up to $2000.
PC, laptop soundcards
The headphone output from your computer’s built-in soundcard is weak and low
because of PC power supply noises. Use a headamp with your soundcard’s line
CD players, MP3 players
CD and MP3 players' headphone output is medium quality and weak, because of the
battery voltage and manufacturers' ambition to increase battery life.
Easily drive headphones from 16ohm to 300ohm
Desktop M2 headamp can easily drive any headphones and earphones with impedances
from 16ohm to 300ohm, from Grado to Sennheiser HD-650.
and technology used in Desktop Hi Fi M2 amp
Burr-Brown Texas Instruments OPA2134 dual
One of the best FET input op-amps in audio, suitable for battery
use. Made by Burr-Brown Texas Instruments.
Gold-plated 8-pin DIP socket
You can easily change op-amp to any dual DIP-8 op-amp
RCA input sockets
6.3mm headphones socket
DC input socket, for external 12V-30V PS (not included)
ALPS RK097 volume control with power
Desktop M2 headamp is built
on a professional Printed Circuit Board (PCB) designed by me employing
in HI-END audio, such as the shortest possible signal path and power supply
as close as possible to the op-amp power leads. All parts, including volume pot
are on PCB without any wire and cable.
The volume control is a high-quality Japanese ALPS RK097 potentiometer with
built-in power switch.
The ALPS pot's channels are perfectly matched , ultra smooth and quiet-operating,
Metal film 1% + hand matched resistors
All resistors are
highest quality metal film 1% tolerance and hand matched by me to ensure
both channels are identically balanced.
TLE2426 Rail splitter
To allow amp work from external 12V-30V DC PS, the power supply uses
a high performance TLE2426 voltage rail splitter which provides
precisely balanced positive and negative supply voltages.
2 x Panasonic FM low ESR 470 mf power caps
Japanese made Panasonic FM capacitors with ultra low ESR which have a faster
This results in the
clear, detailed highs and low, deep bass.