{"product_id":"herron-vtph-1","title":"Herron VTPH-1","description":"\u003cp\u003eThe Herron VTPH-1 is a pretty straightforward and extremely well-executed design: all tube, star grounded, and zero feedback. The RCA and ground connectors are gold plated, the AC cord is detachable, and there is a power-line-polarity switch on the back panel -- a nice touch. Cartridge loading is accomplished via resistors soldered to the input connectors, so there are no switch contacts to corrode over time. The tube complement is four 12AX7WA\/Bs and one 12AT7WC. Herron Audio quotes the frequency response at 1Hz to beyond 100kHz (as reported by the bats!). Gain is 44dB for moving-magnet use, 66dB if set up for moving-coil cartridges. The output impedance is 500 ohms nominal (50k ohms or higher recommended load), and the input impedance is 47,000 ohms and 100pF (plus optional loading resistors). The VTPH-1's dimensions are 19\"W x 3.5\"H x 10\"D, and its weight is 20 pounds.\u003c\/p\u003e\n\n\u003cp\u003eTube complement  4 x 12AX7, 1 x 12AT7 Frequency response  RIAA 1 Hz to beyond 100 kHz, 20 Hz to 20 kHz +\/-0.1 dB Gain  VTPH-1MM 44 dB nominal at 1kHz, channels matched to within 0.05 dB VTPH-1MC 66 dB nominal at 1kHz, channels matched to within 0.05 dB Signal-to-Noise Ratio  VTPH-MC 80 dB, A weighted, inputs shorted, AC polarity set Output impedance  500 ohms nominal Input impedance  VTPH-1MM 47,000 ohms, 100 pF VTPH-1MC 47,000 ohms, 100 pF, plus optional internal load resistors at the input terminals Power supply  78,000 uF of energy storage 4 levels of high voltage regulation Regulated soft start DC filament supply Regulated tube bias supply Input capacity  VTPH-1MM up to 300 mV at 1 kHz, 1 volt at 10 kHz nominal (output unloaded) VTPH-1MC up to 30 mv at 1 khz, .1 volt at 10 kHz nominal (output unloaded) Overall dimensions  19\" wide x 3.5\" high x 10\" deep\u003c\/p\u003e","brand":"Herron","offers":[{"title":"Default Title","offer_id":59370655580505,"sku":"2066","price":990.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1066\/5721\/8905\/files\/herron-vtph-1-1.jpg?v=1789118711","url":"https:\/\/wenwaudio.com\/products\/herron-vtph-1","provider":"W\u0026WAudio","version":"1.0","type":"link"}