Product Overview
Alps 30mm Travel Stereo Audio Fader - 34A 10k Logarithmic Dual-Track Control
Condition
Unused new old stock (NOS). Stamped Japan, Alps trademark logo, 77480-314, and 34A- 10KΩX2 on the phenolic base. Terminals are clean and straight with no solder residue. Slide lever travels smoothly along the full track. Evaluation: Visual inspection only. Function testing not performed.
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Product Overview
Manufactured in Japan by Alps, part number 77480-314 is a dual-gang slide potentiometer featuring two independent 10k ohm logarithmic (34A audio taper) resistive tracks. Built into a 45 mm metal enclosure with 30 mm of travel and threaded mounting points, it provides smooth manual level adjustment for stereo audio equipment, mixing consoles, and custom analog hardware.
Key Features
- Nominal resistance: 10 kΩ per channel (dual gang / 10KΩX2)
- Resistance taper: 34A audio / logarithmic
- Slide travel: 30 mm
- Housing dimensions: 45 mm length x 12.5 mm width x 10 mm height
- Mounting hole spacing: 41 mm center-to-center with threaded holes
- Actuator: Flat metal lever, 25 mm extension height with stepped tip
- Terminals: 6 solder lug / PCB through-hole pins in two 3-terminal groups
- Country of manufacture: Japan
Applications
- Replacing scratchy or failed volume and balance faders in vintage stereo receivers and mixing consoles
- Wiring tactile physical attenuators and modulation controls into DIY analog synthesizers
- Servicing channel strips and crossfader sub-assemblies on studio mixers and DJ gear
- Building custom hardware MIDI control surfaces and analog audio processors
Frequently Asked Questions
What does the 34A marking indicate?
The 34A marking specifies an audio (logarithmic) resistance taper. This taper matches human hearing perception, making the fader suitable for audio attenuation, master volume, and stereo channel leveling.
What are the mounting and housing dimensions?
The metal body measures 45 mm in length and 12.5 mm wide, with threaded mounting holes spaced 41 mm center-to-center. The vertical slide lever extends 25 mm above the housing.
Can this fader be wired for mono operation?
Yes. A single channel can be controlled by connecting to just one set of three terminals, leaving the second internal track unused.
Why buy individual Alps faders here instead of a surplus bulk lot?
You can purchase the exact quantity needed for your bench repair or custom build without absorbing the cost of excess inventory or mixed condition. More pieces cost less each, and the price-break table on this page shows what each quantity costs. Orders ship for an $8 flat rate, go free once the order passes $28, and leave our Idaho warehouse the same or next business day.
A genuine Japanese Alps fader gives your fingers the smooth, weighted resistance modern digital encoders forgot how to mimic. Drop it into your console or synth build and bring back the tactile feel of real analog control.
