Vintage Bruel & Kjær B&K Precision Microphone Calibration Coupler Chamber Denmark is a used item in excellent condition, listed on Reverb. The asking price is £112. It is offered by Tube & Capacitor US- tariffs - paid through Reverb. It is in our Microphones category. Used Gear Hunter first saw this listing on 24 October 2026 and last saw it on 9 November 2026. It has been seen 25 times in our scans. Prices are converted from the seller's currency when we scan the listing, so the amount you pay may differ slightly. The seller sets shipping, and import duty or VAT may apply, so check the final cost and the item's details on Reverb before buying.

From the seller

(Description):Ultra-Rare Vintage Brüel & Kjær (B&K) Precision Microphone Calibration Acoustic Coupler Chamber - Made in Denmark (NOS Condition)Up for sale is an incredibly rare, laboratory-grade acoustic measurement instrument manufactured in Denmark by the absolute gold standard of sound and vibration metrology: Brüel & Kjær.This precision-engineered acoustic chamber/coupler is used in advanced audio laboratories for the secondary calibration, reciprocity testing, and phase-mismatch verification of professional 1/2-inch and 1-inch condenser measurement microphones. It ensures that the absolute reference standards of acoustic equipment remain accurate down to fractions of a decibel.The instrument is beautifully preserved in pristine, unused New Old Stock (NOS) condition. It comes securely mounted on its original heavy-set, varnished wooden laboratory display base, which features crisp "Made in Denmark" factory stamps and individual tracking numbers (35208 and 20224).Technical & Cosmetic Details: Manufacturer: Brüel & Kjær (Copenhagen, Denmark) Construction: Solid, heavy-gauge non-magnetic stainless steel, precision knurled grip rings, and immaculate industrial machining. An outstanding, time-capsule acquisition for audio engineers, microphone collectors, high-end acoustic laboratories, acoustic historians, or anyone looking to complete a premium vintage B&K calibration setup.Condition: New Old Stock (NOS) / Collector's grade. Visually perfect, mechanically flawless. Threads turn smoothly. Sold as-is as an untested historical laboratory component. Please closely review all provided high-resolution photographs to inspect the exact physical condition and stamp markings. Internals: The unit disassembles flawlessly. The internal threads, rubber acoustic seals, and the central gold-plated contact pin are entirely pristine, free from dust, wear, or oxidation. Base: Authentic mid-century solid wood base block with factory markings. Dimensions: The wooden base is approximately 16.5 cm in length (please refer to the metric ruler photos for exact scale details). Worldwide Shipping: High-precision laboratory hardware requires absolute isolation during international transit. This device will be wrapped in multi-layered bubble wrap, secured inside a rigid container, and shipped within a heavy-duty cardboard outer box with shock-absorbing foam. Tracked worldwide shipping with a registered insurance number provided immediately.If you have any questions, feel free to send a message.

Vintage Bruel & Kjær B&K Precision Microphone Calibration Coupler Chamber Denmark

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