Hagerman Technology LLC is a small company focused on the design and manufacture of audiophile-grade electronics.
We offer unique products that provide true value through innovation and elegance - from the fertile and creative
imagination of designer Jim Hagerman. All products are handcrafted in the USA and come with a
10 year warranty and 30 day trial period (10% restocking fee). Free shipping! Satisfaction guaranteed, always.
Performance DIY Kits
Piccolo moving coil headamp uses a very quiet and clean discrete JFET
circuit to provide both adjustable gain and loading. Powered by internal batteries or external supply. Recently
upgraded!
"Piccolo" mc headamp
HagUsb connects a computer to your audio system via USB. It provides
both headphone and S/PDIF digital audio outputs. Self powered and compact.
"HagUsb" converter
The Ripper connects your turntable to your computer via USB. This superb
solid state phonostage is combined with a 16-bit ADC and DAC to make a complete standalone LP-to-CD
ripping station.
"The Ripper" recording phono
Castanet tube headphone amp provides outputs for both low impedance
(Grado) and high impedance (Sennheiser) phones.
"Castanet" headphone amp
Chime USB DAC employs a re-clocked 8x upfiltered 24 bit converter
with passive I-V to create a full featured Redbook CD DAC. Amplification is all vacuum tube for the
ultimate in sonics. Extremely smooth and grain-free sound.
"Chime" usb dac
Cornet2 phono improves on the original Cornet circuit by employing
a larger transformer and adding a mono switch.
"Cornet2" phono
Clarinet linestage employs an all-tube SRPP circuit that features no feedback,
low distortion, and low output impedance. Very high build quality.
"Clarinet" linestage
Cymbal power amplifier is an 8W monoblock featuring
super-linear 6H30 triodes in a pure class-A push/pull zero feedback configuration.
"Cymbal" power amp
Budget DIY Kits
Bugle phono is a low cost phono stage that offers
flexibility in construction. Extremely popular.
"Bugle" phono
Power Supply for the Bugle phono stage provides clean,
regulated +/-15Vdc power.
"Bugle" power supply
HagClock is a low noise oscillator for use as a reference clock
in CD players and transports.
"HagClock"
iRIAA Filter is a two-channel circuit that transforms a line level
audio signal into a pre-equalized source that mimics a phono cartridge. Use it to test or burn-in your phono
stage.
"iRIAA Filter"
Hagerman Audio Labs
FryBaby is a battery-powered portable burn-in generator
designed for breaking-in cables and interconnects. It features a built-in inverse RIAA network such that it also
properly burns-in phonostages.
"FryBaby" burn-in generator
FryKleaner is the industrial model burn-in generator
capable of simultaneous break-in of speaker cables, interconnects, balanced and digital cables. Rack mounted.
"FryKleaner" burn-in generator
FryDaddy is the professional version of FryKleaner
devices, built with a much higher output power for more effectiveness and quicker results.
"FryDaddy" burn-in generator
VacuTrace vacuum tube curve tracer is a professional
piece of test equipment designed explicitly for the testing and characterization of audio vacuum tubes.
"VacuTrace" vacuum tube curve tracer
Customer Testimonials
Very quick turn around for someone who seems so busy. I'm glad you take the time to do the blog and to write
personal response emails to someone who just orders a $20 part. You have integrity.
I really appreciate the way you run your business - it's not everyone who can put out products at such a
reasonable price and still keep in touch with the customers. You've got a great reputation on all the various
Internet bulletin boards, and appears very well deserved.
The quality of the circuit board is remarkable, and the layout of the resistors makes the assembly basically
idiot-proof. Your passion for electronics design shows through in the visual simplicity of the board itself and in
the sound the circuit produces. Well done!
I have to say when situations like this arise is when you get to see the character of the people and companies
you do business with. You have been responsive, helpful and very professional throughout. I am very confident of
having selected the right company and product.
This is the best DIY project board that I have ever seen. Good job!
As an electrical engineer myself, I appreciate the fine quality of the double-sided, plated-through hole
fiberglass circuit board, the nest layout, comprehensive documentation, and a parts list that can be ordered in
minutes from DigiKey. This is how all kits should be presented, and I have built a few over 30 years of building
experience.
