BENSON AMPS / GERMANUIM BOOST

A stable sound that is not affected by the surrounding temperature, which is a problem with germanium transistors. Even at unity gain, the sound is smooth and detailed compared to the original sound. It works great not only with guitars, but also with bass and acoustic guitar pickups.

■Guitar effector ■Fuzz ■Heat bias control function Germanium transistors are very delicate, and the bias between the capacitors changes depending on the temperature of the capacitor. When the power is turned on, the heater gently and automatically warms the capacitor to the appropriate temperature. This means that the best performance can be obtained regardless of the temperature outside. It takes 2 to 3 minutes from turning on the power until it is at the appropriate temperature before it can be used. After turning on the power, the LED lights up orange. This indicates that it is "warming up", and the hFE (transistor gain) is increased to the specified value and the bias is adjusted to the correct voltage. When the temperature is at the appropriate level, the heater turns off, the LED turns green, and it is ready to go. The LED may go back and forth between orange and green during operation, but this is not a malfunction. The heater operates as necessary to keep the circuit at the appropriate temperature. This unit is designed to operate normally at a temperature of up to approximately 37.8°C. Test results showed that the internal temperature of a white casing was approximately 7°C lower than that of a black casing when exposed to direct sunlight, which is why they chose white as the casing color, and they are so particular about temperature. ■ IMPEDANCE control and Class A buffer The IMPEDANCE knob controls the input impedance. At low settings, you can get a tight sound, like turning down the volume of the guitar itself, even with a high gain setting. However, a low impedance setting can actually have a negative effect on the sound when a buffer or other effect is connected in front of it. That's why we added a Class A buffer to the input section. This buffer uses a passive pickup simulator circuit, like Jack Orman (the guitarist who created the world's first compact effect), which uses audio transistors as the induction coil, resistor, and capacitor. This buffer eliminates problems that arise when connecting to other effects, and makes it possible to connect things that were previously impossible, such as connecting a booster in front of it. ■ GAIN range This unit can produce a wide range of sounds, from clean boost and overdrive to aggressive fuzz with plenty of octave overtones. The sound variations are endless when you combine GAIN and IMPEDANCE. In particular, the unique IMPEDANCE control solves the problem of "if I don't turn up the gain, the fuzz doesn't sound like it..." * Notes on power supply - Use a 9V DC (center negative) power supply, such as the BOSS PSA-100. Do not connect a power supply other than 9V, as it may cause damage. - The current consumption is 100mA or less even when the heater is operating, but do not use a power adapter that supplies significantly less than 100mA. This may cause the heater threshold to malfunction, causing the LED to go out of control or an oscillating sound to be heard. - Battery operation is not supported. * Notes on internal trim - Never touch the trim inside (on the board). If used with values ​​other than those marked at the time of shipment, the warranty will not apply.