Hagerman Cornet3 and Piccolo2 MM Vacuum Tube Phono Preamp & Head Amp

Excellent phono preamp and head amp (stepup for moving coil cartridge) hand built by Jim Hagerman. 
From Jim on the kickstarter campaign: "The Cornet3 is a radical evolution of the highly acclaimed circuit I  developed and introduced about
a dozen years ago. If you are seeking top-notch electronics to bring out the best in your
turntable and vinyl collection, look no further. For those of you with moving coil cartridges, I
am including the Piccolo2, a re-designed active head-amp with up to 26dB gain, built into a matching
enclosure...

...you would
have to spend well over $2000 to get the equivalent performance from anyone else in the industry.
That makes the Cornet3 and Piccolo2 incredible bargains."

The Cornet3 delivers high performance on a budget. The circuit
topology features common cathode class-A gain stages with no feedback,
passive equalization, and cathode follower output buffers with constant
current sink loading. Power is supplied by a regulated wall-wart driving
a boost converter (running at about 50kHz) to generate the high voltage
rail required for proper tube biasing.

Specifications

• 44dB gain (1kHz)


• 47k ohm input impedance


• 1k ohm output impedance


• +/-1dB RIAA accuracy (30Hz to 30kHz)


• 10Hz to 600kHz bandwidth (-3dB)


• 77dBA signal-to-noise (ref 5mV)


• 30dB overload (ref 5mV @1kHz)


• 5 x 7 x 1 inches


• 120V/240V operation 17W


• 12AX7 x 2, 12AU7 x 1

The Piccolo is an MC headamp that provides a linear pre-gain for your

MM phonostage. The active circuitry uses low noise matched discrete

JFETs in a no-feedback gain and buffer configuration, offering very low

noise and distortion. The sound is extremely neutral leaving no sonic

signature. Both loading and gain are adjustable, providing extreme

flexibility.

Specifications

• 0, 12, 20, 26 dB gain (1kHz)


• 47, 100, 220, 470, 1k, 47k ohm input impedance


• 300 ohm output impedance


• 6Hz to 800kHz bandwidth (-3dB)


• <0.01% distortion
  
  


• 85dBA signal-to-noise (ref 5mV)


• 3 x 5 x 1 inches


• 120V/240V operation