Herron VTPH-2A Phono Preamp
The Herron VTPH-2A Phono Preamplifier was created to address the retrieval of musical information from vinyl LPs without any compromise. The original design was only intended for use by a few dedicated music lovers in their cutting edge audio systems. The design was so good, and demand so high, that the unit was refined and engineered to meet the requirements for a more durable unit manufactured in larger quantities. In the process, important refinements were developed and discoveries were made about tolerances and the threshold of human hearing limits.
The MC InputsThe moving coil inputs have an additional 22 dB of gain which is provided by a proprietary FET very low noise linear gain stage connected directly to the MC inputs. The moving coil FET gain section is connected in front of the tube section when the unit is in the MC mode. This moving coil FET gain section has been designed specifically to avoid the sonic artifacts found in many solid state designs.
Moving coil loading RCA resistor plugs can be inserted into the back of the VTPH-2A at the "MC Load" connectors to properly load specific moving coil cartridges. Check with your cartridge manufacturer for recommended loading.
The MM InputsThe moving magnet inputs send the cartridge signal directly to the tube section and bypasses the MC FET gain stage. The moving magnet inputs provide all tube amplification of the signal from the cartridge. The moving magnet inputs have an internal 47k Ohm loading resistor for each channel and 100pF "Miller Effect" loading capacitance which is provided by the grid of the first 12AX7 tube.
Why Loading Plugs Instead of Dip-Switches?
Note A: The VTPH-2A uses electronic switching for audio signals when changing from moving coil to moving magnet mode. This is initiated by one mechanical switch which does not carry any analog audio signals.
Note B: Some cartridges will need loading in order to reduce their inherent rise in high frequency response.
The moving coil inputs have no load resistors installed unless specified by the customer when the unit is ordered from Herron Audio. We recommend trying the VTPH-2 in the no-load configuration as the unit is supplied for most moving coil cartridges. 47,000 (47k) ohm RCA load plugs are supplied with the unit for optional use. Additional user specified loading plugs can also be purchased with the unit.
The moving magnet inputs are factory loaded at 47,000 (47k) ohms, 100pF (standard loading for moving magnet cartridges).
Ratings & Reviews
by Dorian Workman
Magnificent! So much better than the Parasound JC3+ and Sutherland Duo that I also tried. This one is a keeper!
Beautiful sound. Bravo Herron!
Excellent State of the Art Phonostage
by Doug -
I have had the Herron for about a month. It takes time to break
in. It adds impressive presence to music of all kinds without loosing detail. Very smooth over the entire audio spectrum.
It is very easy to set up. I have two turntables connected to it, both VPI Prime Signatures with Van den Hul Crimson and Stradivarius (through Bob's Devices SUT to MM input) carts. In turn the Herron is connected to a Pass Labs INT-250 and in turn to B and W 802 D3 speakers.
So if the Herron were anything but stellar this system would
show it immediately. Happy to say that the Herron is easily up to the task of enhancing a high end system. It just keeps getting better each day.
I like Keith Herron's philosophy of simple yet elegant electronics and customer support. Its made in the USA.
Why pay twice as much for a foreign product and get poor customer support.
Spectacular Tube Phono Preamp!!!
by Tom G
Exceptional sound and greatly improved dynamics are the benefits that I found when I upgraded from the Pass Labs XP15 phono preamp to the Herron Audio VTPH-2A. I liked the Pass unit quite a bit, but some music sounded a tad harsh, so the folks at NeedleDoctor recommended the Herron phono preamp and I could not be happier.
This Herron unit is almost as quiet as the solid state Pass but offers greater imaging, depth and tone.
The rest of my system includes:
Rega RP 10 turntable with Rega Aphelion MC cartridge
SimAudio Moon Evolution P7 preamplifier
SimAudio Moon Evolution W7 power amplifier
Benchmark DAC2 DX digital to analog converter
McIntosh MR88 AM FM HD tuner
Sonus Faber Cremona M tower speakers
REL R328 subwoofer
Audioquest Columbia interconnects
Audioquest Mont Blanc speaker cables
Furman IT Reference power conditioner