This machine adopts attenuated tone circuit + NE5532 preamplifier compensation,
When not powered, the attenuation is -15db,
When the power is supplied, the amplifying part of the NE5532 works for compensation, and the gain is 0db, that is, the input and output signals are equal.
When the switch is bounced, no power supply is required, and the working state is an attenuating tone circuit, which is -15db
Press the switch when power is supplied, there is an internal amplifier circuit for compensation and the gain is 0db.
DC power supply should use low-ripple high-quality power supply as much as possible. When the input signal amplitude is less than 1V, 12V power supply is sufficient. When the input signal is greater than 1V, please increase the power supply voltage, and the maximum power supply voltage is 24V.
Package include :
1 x Preamplifier
- We offer quality products at a reasonable price.
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- We only accept payment through Paypal.
Items will go to post within 1-2 business days after payment confirmed.
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1. We ship to Worldwide.
2. We only ship to confirmed PAYPAL address; your PAYPAL address must match your Shipping address.
3. Any non-received items caused by invalid address registered on PayPal are not in our full refund or replacement policy. Shipping fee has including the local handing and packaging fee.
4. All the items will be shipping within 1-2 working days after receiving the payment, except some holidays.
5. We will not be responsible for any custom delay or tax, because transit time is highly depended and provided by postal Service.
6. If you have any problem, please contact us via message, we will reply message within 1-2 working days, please wait for patient.
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If you can't receive the product within 2 months (60 days), please contact with us,we promise to payback 100% of your money.
We ensure our products work normally before post.If the products is broken before arrival to you,all you should do is taking a photo to show us our broken product.We promise to payback 100% of your money. - If the item is defect when you receive it or you are not satisfied with it, please return it within 14 days for a replacement or money back. But the items must be back in factory condition. Please contact us and double check the return address before you return it.
- If is item is defective in 12 months, you can return it to us. We will send you a new replacement after receiving the defective item.