Shure A85F
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What you need to know
What you need to know
- Impedance Matching: converts a low-impedance mic signal to a high-impedance input, useful for expanding compatibility.
- Voltage Gain up to 24 dB: helpful for optimizing the level according to the audio chain, and also usable in reverse.
- Direct and Robust Connectivity: balanced 3-pin female XLR input and 6.3 mm mono male jack output.
- Simple Solution Without Power Supply: ideal for troubleshooting, home studios, rehearsals, or live performances.
Manufacturer Information
Shure
https://www.shure.com
------------------------
Safety manager:
Algam SAS
Email: contact@algam.net
Address:
An Essential Adapter to Connect Two Worlds: Microphone and High Impedance
This microphone level transformer is designed to solve a very common case: connecting a low-impedance microphone source to equipment expecting a high-impedance input. It easily integrates into an existing setup without modifying your installation or adding an active box.Who Is It For, and When to Use It?
It is intended for musicians, technicians, and creators who want to connect a microphone to a high-impedance jack input (depending on available equipment), or conversely use the transformer in the opposite direction. It is also a practical option for mobile setups when you want to travel light while remaining compatible with various devices.Operation: Impedance Matching and Level Management
By ensuring the transition from low to high impedance, this transformer helps maintain better level consistency and sound quality when impedances do not match. The 24 dB voltage gain can be used to recover level depending on the source and input used, and it can also be exploited in the reverse direction to adapt to other connection scenarios.Technical specifications
| Category | microphone accessory | Color | Black |
| Type | transformer | Quantity | 1 |
| Input | low-impedance female XLR | Output | high-impedance 6.35 mm male jack |
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Questions frequently asked
Can an XLR microphone be connected to a 6.35 mm high-impedance jack input?
The female low-impedance XLR input and the male high-impedance 6.35 mm jack output allow this connection. The transformer adapts the signal between these two impedances.
What gain does the Shure A85F transformer provide?
A voltage gain of 24 dB is specified. This level can help recover signal strength depending on the microphone source and the connected input.
Is the XLR connection female or male?
The input connector is a female XLR designed for a low-impedance microphone source.
Can it be used in reverse?
Use in the reverse direction is intended to accommodate other connection scenarios. The transformer can thus be used when adapting from high to low impedance. The connectors remain a female XLR and a male 6.35 mm jack.
Does this transformer require an active box?
No additional active box is required: this transformer integrates directly into the existing configuration.



