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  • Yamamoto Sound Craft CA-03 Tube phono preamplifier
  • Yamamoto Sound Craft CA-03 Tube phono preamplifier
  • Yamamoto Sound Craft CA-03 Tube phono preamplifier
  • Yamamoto Sound Craft CA-03 Tube phono preamplifier
  • Yamamoto Sound Craft CA-03 Tube phono preamplifier
  • Yamamoto Sound Craft CA-03 Tube phono preamplifier

Yamamoto Sound Craft
CA-03 Tube phono preamplifier

Product code: ca-03l
Regular price ¥459,800 円
Regular price ¥459,800 円 Sale price ¥459,800 円
Sale Sold out
Tax included. Shipping calculated at checkout.
Volume type
Power-supply voltage

CR type phono equalizer circuit mounted

High gain type equalizer amplifier

Description

Separate power supply ripple filters from rectifier circuit for each stage separately, Each stage is supplied from an independent power supply.The rectifier circuit made a double wave rectification and improved the regulation.Ignition of vacuum tube Telefunken 6AK5W heater is equipped with independent rectifier circuits for each of 6 vacuum tubes, it eliminated the mutual vacuum tube interference.By setting the operating point to the optimum point in the amplifier circuit, the acquisition of a large gain and the reduction of noise are compatible at the same time.

The gain of the equalizer amplifier is a high gain type, and it is 58dB at 1kHz. Since the gain of the ordinary equalizer amplifier is about 34dB, CA-03 is set to 24dB larger.By reducing the noise to 2.3mV, the Signal/Noise ratio achieved 110dB. CA-03 equalizer amplifier gets gain with only two vacuum tubes, then it is very simple construction gives no lack of signal information.Although it is a CR type circuit configuration, it achieves a considerably good S/N ratio.


Maximum output is approximately 28V, it can be used for MC cartridges as well as MM cartridges with large output and MC cartridges with high output. Yamamoto Sound MC cartridges YC-03S, YC-03M (output: 0.25 mV) can be directly connected without a step up transformer.The sound of the MC cartridge which does not pass through the step-up transformer is fresh and the information volume is greatly improved.The ideal input impedance of the equalizer section is 100ohms.

《Line amplifier secton》
Spec
Vacuum tube Telefunken6AK5W x6
Maximum output 8V
Frequency response 10-150kHz/-0.5dB
Output impedance 1.6kohms
Gain 14dB(appx.5times)
Residual noise 0.13mV
Signal/Noise ratio 92dB
《Equalizer section 》
Maximum output 28V
Frequency response 30-15kHz/+-0.5dB
Inputimpedance 47k ohms,1k ohms,100 ohms
Outputimpedance 4.8k ohms
Gain 58dB/1kHz
Residual noise 2.3mV
Signal/Noise ratio 110dB
Dimensions 420(W)290(D)94(H)mm
Weight 6.3kg
CA-03L Double type volume adjustment
CA-03 Attenuator for level control

Yamamoto Sound Craft CA-03 Tube phono preamplifier

Regular price ¥459,800 円
Regular price ¥459,800 円 Sale price ¥459,800 円
Sale Sold out
Tax included.