Detector with Amplification
Digital volume control
Digital VU Meter
Directional Microphone
Directional Microphone
DiSEqC Monitor
DIY LED Projector
DMX 3-in-I
ECC83 (12AX7) Microphone Preamplifier
E-Dictator
EL156 Audio Power Amplifier
Elektor Mini Crescendo (1984)
FET Amp with Valve Sound
Filmnet Decoder (1989)
Filter for Audio Limiter
Five-output Video Distribution Amplifier
FM Stereo Decoder
FM Superregenerative Receiver
Formant synthesizer (1977)
Formerly a tobacco tin
From 17×4 to Channel Routing
Fuel Cell Developments
GBDSO Gameboy Digital Sampling Oscilloscope (2)
Good and Occasionally Favourable
Guitar Effects Switchbox
Headphone Amp with 3D Sound
Hi-fi Wireless Headset
High Voltage Amplifier
High-end Power Amp
High-End-Preamp, Part 1
High-End-Preamp, Part 2
High-Q Notch Filter
Hybrid Headphone Amp
Induction Radio
Infrared remote control
Interference-free Sound
IR-S/PDIF Receiver
IR-S/PDIF Transmitter
ISO Standard for Car Radios
LED Ringflash
Light as Air
Line-2-mic for notebook
LM4906 Boomer Audio Power Amp
Logarithmic Volume Control
Low-Noise Microphone Amplifier
Max. Temp. Detector for Fan Controller
Metronome/Diapason
Mini ATmega Board
Mini Audio DAC
Mini Test Chart Generator
Mini VHF FM Receiver
Modern Surround-Sound Systems
More MP3 Projects
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