DIY 7-Segment Audio Preamplifier for Mobile and Computer Gaming Headset - Tone, Treble, Mid, Bass Adjuster

Product Features

• 7-section equalizing adjustment range: ±12dB with frequency bands at 60Hz, 150Hz, 400Hz, 1kHz, 3kHz, 6.5kHz, 15kHz, using TI or ST original TL074.
• Preamplifier gain supported by the classic 4580 operational amplifier, providing 5x amplification (14dB).
• Includes an earphone amplifier with a 47-type earphone driver circuit composed of NE5532, compatible with all earphone types.
• Input impedance: 20K, Output impedance: 600 Ω.
• 3.5mm input interface supports 4-pole plug. Compatible with headsets with a microphone for phone calls. An additional terminal with a lotus interface is available.
• Power supply required: DC 5V-12V, with interface specification of 5.5 x 2.1mm.
• Static current: approximately 390mA at 5V power supply, and about 140mA at 12V power supply.

Usage Tips

• The 3.5mm input and the lotus input cannot be used simultaneously; only one can be selected at a time.
• The 3.5mm and lotus outputs can be used concurrently.
• Power supply can be provided via a power bank or a high-quality charging head. Poor-quality charging may result in AC noise.

Package Includes

• 1 x Host
• 1 x USB DC Cable