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Yamamoto Sound Craft : Vacuum tube preamplifier CA-03
Form : Vacuum tube type preamplifier - use vacuum tube : product made from Telefunken 6AK5W 6 piece <<Line amplifier part>> - maximum output: -- 8V - frequency characteristic: -- 10-150kHz (-0.5db) - output impedance: -- 1.6komega - line amplifier part profit: -- 14dB (about 5 times) - residual noise: -- 0.13mV - signal to noise ratio: -- 92dB <<Equalizer amplifier part>> - maximum output: -- 28V - frequency characteristic: -- 30-15kHz(+-0.5db) - input impedance: -- 47komega, 1komega, and 100 ohms - output impedance: -- 4.8komega- amplification rate: -- 58dB/1 kHz (The gain of the usual amplifier is a setup larger 24dB than a standard because of about 34dB.) - residual noise: -- 2.3mV - signal to noise ratio: -- 110dB - outside dimension: -- 420(W)290(D)94(H) - weight: -- 6.3kg- price yen398,000 * Dual type type volume control volume is adopted. Many characteristics of EQB-01 are the same as the phono equalizer part of CA-03L.
Yamamoto Sound Craft : Vacuum tube preamplifier CA-03L
Yamamoto Sound Craft of Japan is a high-end machine shop. They produce in-house whatever custom parts their audio division requires to go Kai-Zen - build big dreams in tiny steps. Wooden head shells. Cartridge parts. Precision meters. Teflon tube sockets with gold or silver-plated phosphor bronze (copper/zinc alloy) contacts. Wooden horns. Wooden tube sockets. Resin-impreganted Japanese Cherry wood panels that are hydraulically compressed, then vacuum-formed and phenol-injected to obtain Bakelite-type qualities and become hard enough to be precision CNC milled. Vintage-style tube shields. Solder lugs using the same Complite wood composite bases as the cover panels. C-core output, power and choke transformers. Ebony footers using NOS Japanese stock. Hermetically encapsulated coupling capacitors in Ebony cylinders to prevent long-term leakage. Custom speaker terminals. You get the picture. Off the shelf and over the counter are two phrases Shigeki Yamamoto does not understand.