Used Shure SLIM X Microphone

Used Shure Slim-X Model 777S Crystal Microphone

Estimated Year: 1950s–1960s

Made in: USA

Overview

This vintage Shure Slim-X Model 777S crystal microphone is a standout piece of classic American audio design, featuring a sleek brushed aluminum body and iconic mid-century styling. Built by Shure Brothers in the USA, this mic was originally intended for broadcast, PA, and recording applications during the golden era of analog audio.

The Slim-X series is known for its crystal element design, which delivers a distinctively warm, mid-forward tone that has become highly desirable for harmonica players, blues musicians, and collectors chasing authentic vintage character. Its slim, elongated body and front-address grille give it a unique look compared to traditional bullet mics.

This example includes an XLR-style connector adapter, making it easier to integrate into modern setups while maintaining its vintage charm.

Features

- Shure Slim-X Model 777S crystal microphone

- Made in USA by Shure Brothers, Inc.

- Vintage crystal element design

- Classic brushed aluminum finish

- Front-address grille with Shure emblem

- Slim, ergonomic body style

- Includes XLR-style connector adapter

- Ideal for harmonica, lo-fi vocals, and vintage recording applications

Condition

This microphone is in Good vintage condition.

- Tested and passes signal (if you tested it—if not, say “untested” and I’ll adjust)

- Light cosmetic wear consistent with age

- Minor scratches and patina on the housing

- Some oxidation visible on the connector

- Label is intact and legible

- No major dents or structural damage

Store Policies

- All items are tested before listing and again before shipping.

- Orders typically ship next business day.

- Shipping is available to the continental U.S. only.

- We do not accept trades on shipped items.

- Returns are accepted within 48 hours of delivery. The buyer covers return shipping, and a 20% restocking fee applies. If you have any questions before buying, feel free to message us—we’re happy to help.