Description: An integrated amplifier with almost the same configuration as the L-309. Amplifier The only difference from the L-309 is the output and microphone circuits, and the appearance is almost the same. The main amplifier section uses a full-stage direct-connection circuit that removes the output capacitor by using a dual power supply system. In addition, the output stage uses a pure complementary configuration that combines a PNP type power transistor (2SA680) and an NPN type power transistor (2SC1080).The driver stage is configured with two stages of differential amplification, and the circuit has been designed to reduce crossover distortion. The preamplifier section uses a three-stage direct-connection circuit for the equalizer circuit, and is configured using ultra-low noise silicon transistors of NPN type (2SC1222) in the first stage, PNP type (2SA640) in the second stage, and NPN type (2SC1222) in the third stage. This circuit has an advantageous power supply utilization rate and achieves excellent linearity.In addition, sufficient DC feedback is applied to this circuit to improve transient characteristics. The intermediate amplifier section after the equalizer circuit is equipped with a linear equalizer circuit.This circuit is a kind of tone control circuit that can give two types of linear characteristics, "low frequency down, high frequency up" or "low frequency up, high frequency down" over the entire frequency range centered on 1kHz without affecting the recording output. This allows you to correct sources that deviate from the standard RIAA curve over a wide frequency range or have a poor sound balance that cannot be easily corrected with conventional tone controls. The tone control circuit uses a LUX type NF type that has a straightforward change characteristic and no undulation in the frequency characteristic at the electrical midpoint. In the L-308, the bending point frequency can be switched between three points in both the low and high frequencies, allowing for fine adjustment of sound quality.It also has a tone defeat switch that allows you to skip this circuit when tone control is not necessary. The filter circuit of the power supply section uses two 10,000μF high-ripple type large-capacity aluminum electrolytic capacitors for the positive and negative power supplies, and in combination with a well-regulated transformer, it provides a stable power supply. The power supply of the preamplifier section is constant voltage, preventing intermodulation distortion caused by fluctuations in the power supply. Equipped with a low-cut filter and a high-cut filter that can select two frequencies. Equipped with a continuously variable attenuator that can attenuate from 0dB to -18dB (about 1/8). Since the attenuator is located immediately after the main section input, it can be used as a level set volume when using the main section alone. Equipped with a phono input impedance switching function, allowing you to select three impedance levels. Equipped with a level control for the tuner terminal. Equipped with two speaker outputs.
Price: 709.65 USD
Location: iwate ken
End Time: 2025-01-13T09:46:07.000Z
Shipping Cost: 0 USD
Product Images
Item Specifics
Return shipping will be paid by: Seller
All returns accepted: Returns Accepted
Item must be returned within: 60 Days
Refund will be given as: Money Back
Brand: Luxman
Type: Integrated Amplifier
Color: Silver
Model: L-308
Country/Region of Manufacture: Japan