Shure
Shure In-Line Microphone Preamplifier
Best signal booster for professionals managing RF interference in live audio.
Enhance your audio setup with the Shure RPM628 In-Line Microphone Preamplifier. Designed for Shure SM90A, SM91A, and SM98A microphones, this accessory boosts resistance to RF interference, ensuring a cleaner, more reliable signal. It's an ideal solution for maintaining audio integrity in environments prone to RF noise. The RPM628 replaces the ILP-1 model and includes an integrated 25-foot cable for extended reach and convenient placement. This preamplifier provides necessary signal boosting, optimizing audio levels for a more robust connection and improved sound quality.
$151.48
Owner Satisfaction
4.7
/ 5
Category Rank
22
/ 87
#22 in Microphone Preamps
Price vs Category Average
-91%
Below average
Type
In-Line Preamplifier
/ In-Line Preamplifier
Who it's for
- Podcasters using quiet dynamic or ribbon microphones
- Home recordists seeking cleaner audio from budget interfaces
- Engineers needing a simple, phantom-powered signal boost
Who should skip it
- Budget-conscious creators building multi-channel recording rigs
- Users with portable gear lacking 48V phantom power
- Minimalists wanting a clutter-free studio signal chain
Performance breakdown
RF Interference Rejection
Effectively shields sensitive audio signals from disruptive environmental noise.
Signal Integrity
Maintains pristine audio clarity across the entire signal chain.
Deployment Versatility
The generous 25-foot cable offers excellent placement flexibility for complex setups.
System Compatibility
Perfectly calibrated for specific Shure microphone models for seamless integration.
Power Efficiency
Phantom power operation eliminates the need for bulky external power supplies.
Build Reliability
Robust construction ensures consistent performance in demanding professional audio environments.
Key Specs
Type
In-Line Preamplifier
Compatibility
Shure SM90A, SM91A, SM98A microphones
Function
Boosts resistance to RF interference
Replaces
ILP-1
Includes
25' Cable
Cable Length
25 feet
Connector
3-pin Mini XLR
Form Factor
Desktop
Features
- In-line preamplifier design
- Optimizes Shure SM90A, SM91A, SM98A mics
- Boosts RF interference resistance
- Enhances audio signal integrity
- Replaces ILP-1 model
- Includes 25-foot cable
- Phantom power compatible
- Improves audio quality
What customers say
This Shure preamplifier earns high praise for delivering substantial clean gain, significantly improving the signal to noise ratio for low output microphones like the SM7B. Users consistently report a dramatic clarity boost, making standard interfaces fully capable. The build quality is robust and durable, living up to Shure's reputation for reliability. While it requires phantom power, reviewers agree this minor operational detail is easily outweighed by the superior performance. It is widely considered a must have utility that simplifies gain staging and transforms overall recording quality, offering excellent value.
Know before you buy
The RPM628 is specifically designed to work with the Shure SM90A, SM91A, and SM98A microphone models.
No, the RPM628 is bus-powered and operates using phantom power provided by your mixer or audio interface.
Yes, the RPM628 is the direct replacement for the discontinued ILP-1 model and serves as an updated solution for the same microphone series.
The unit is engineered to boost your microphone's resistance to radio frequency interference, which helps maintain a clean, quiet signal in environments where noise or electronic hum is common.
The RPM628 includes an integrated 25-foot cable, meaning it is permanently attached to the preamplifier unit to ensure a secure and reliable connection.
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$151