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Description
Grace Design m501 - Microphone PreampFor 500 Series Racks Single Channel Wide Gain Range Hi Z Input Ribbon Microphone Mode Phantom Power High Pass Filter The m501 from Grace Designs is a 500 series microphone preamp module, based on the company's m101 microphone preamp. While the 500 series market has plenty of colored preamp options, the natural, musical clarity of the m501 makes it a welcome addition. This circuit is for engineers who wish to capture their sources with as little
- For 500 Series Racks
- Single Channel
- Wide Gain Range
- Hi-Z Input
- Ribbon Microphone Mode
- Phantom Power
- High-Pass Filter
The m501 from Grace Designs is a 500 series microphone preamp module, based on the company's m101 microphone preamp. While the 500 series market has plenty of colored preamp options, the natural, musical clarity of the m501 makes it a welcome addition. This circuit is for engineers who wish to capture their sources with as little coloration or distortion as possible.
The m501 module features a balanced, transformerless design, with 48V phantom, a 75Hz high-pass filter, and a 1/4" HI-Z instrument input. Also standard is a ribbon microphone mode, which raises the input impedance, bypasses the input decoupling capacitors and deactivates 48V phantom to protect delicate ribbon microphones from damage.
- Single channel microphone preamp in the 500 series form factor
- Fast and musical transimpedance architecture
- Wide 10dB to 75dB gain range
- Updated audio path with 0.5% precision metal film resistors
- Sealed gold contact relay for Hi-Z input switching
- Ribbon microphone mode (also great for dynamic mics) - relay bypass of phantom power decoupling capacitors, increased input impedance and 48V lockout
- High performance output line driver amplifier and HPF amplifier
- Enhanced RFI interference suppression
- 12 position gold plated rotary gain switch
- 3 output connectors - XLR balanced, 1/4" TRS balanced and 1/4" TS unbalanced
- LED indicators for +48V, ribbon mode and high-pass filter
- Laser-etched black anodized frontpanel
- Made in the USA
UPC: 823821500005
In the Box
Grace Design m501 - Microphone Preamp
- Five (5) Year Warranty
| Number of Channels | Single |
| Inputs | 1 x XLR (on 500 rack) 1 x 1/4" TS phone Hi-Z Instrument (on module) |
| Output | 1 x XLR 1 x 1/4" TRS phone 1 x 1/4" TS phone |
| Phantom Power | +48V |
| Multi Function | No |
| Gain Range | 10dB to 75dB (including +10dB trim) |
| Maximum Output Level | 27dBu (100k? load, 0.1% THD, 1kHz, API Lunchbox) |
| Frequency Response | 3.8Hz to 288kHz, -3.0dB, microphone input @ 40dB gain 8.4Hz to 135kHz, -0.5dB, microphone input @ 40dB gain 1.7Hz to 180kHz, -3.0dB, instrument input @ 20dB gain 4Hz to 72kHz, -0.5dB, instrument input @ 20dB gain |
| Noise | Referred to input @ 60dB gain: <-130dB with 50? source <-128dB with 150? source <-124dB with 600? source |
| Power Requirements | 120mA maximum current required from +16V and -16V power supplies |
| Dimensions (WxDxH) | 1.5 x 6.6 x 5.5" (38 x 168 x 140mm) |
| Weight | 0.7 lbs (316g) |
| Specialties | Ribbon microphone mode raises the input impedance, bypasses the input decoupling capacitors, and deactivates 48V phantom to protect delicate ribbon microphones from damage |
| Packaging Info | |
|---|---|
| Package Weight | 1.65 lb |
| Box Dimensions (LxWxH) | 12.1 x 10.3 x 4.4" |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
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4.3 ★★★★★
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Product Reviews
★★★★★ 4
Bees think you’re a flower
Sun protection factor: 30 Sun Protection Factor (SPF), Size: 6 Fl Oz (Pack of 1)
Works great and I love the smell. Unfortunately so do the bees. Every time I wear it, attracts bees and have to fight off yellowjackets
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Reviewed in the United States on November 2, 2025
★★★★★ 5
One of the best-rated consumer sunscreens
Sun protection factor: 30 Sun Protection Factor (SPF), Size: 6 Fl Oz (Pack of 1)
I tend to analyze, no, overanalyze nearly every purchase I make. Sunscreen is no different. In fact, I'd say its one of those things you really shouldn't slack on... i mean Afterall, it's protecting the largest human organ! All of my in-depth reviews indicate that this was one of the top sunscreens to purchase due to its overall efficacy and purity of chemicals used in it.
All of that said - I really enjoy using it. It smells absolutely fantastic and makes me feel like I'm on vacation even if I'm just a couple miles from home. The application is extremely air-light, non oily, and it doesn't even feel like I'm wearing it. It didn't stain my clothing or rub off on anything. The spray comes out pretty lightly, as in you won't empty half the bottle over a few moments of depressing the button. Fantastic sunscreen and I will absolutely keep purchasing this.
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Reviewed in the United States on July 29, 2023
★★★★★ 5
nice!
Sun protection factor: 50 Sun Protection Factor (SPF), Size: 6 Ounce (Pack of 2)
no streaks! good coverage
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
★★★★★ 5
My Fave Sunscreen
Sun protection factor: 50 Sun Protection Factor (SPF), Size: 6 Ounce (Pack of 2)
I love this sunscreen. I bike ride a lot in the summer and I always bring sunscreen with me because I sweat and need to reapply. If I use a cream, my hands end up wet or greasy and I'm holding the handlbars, etc. So, using a spray is way better for me.
I loooooooove the smell of this stuff. It smells of summer! The spray makes it easy to get my back while at the beach and while it's not insanely waterproof, it's certainly water resistant and lasts a long time.
I like the SPF 50, because less isn't enough for me. They say going higher than 50 isn't any better, so I stick with 50 as my "go to."
Buying the duo, as sold here, makes it a good value. Buying this product at a local drug store would cost twice as much. I easily go through both cans in a single summer.
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Reviewed in the United States on November 1, 2025
★★★★★ 5
Lightweight for every day
Color: Classic
This sunscreen is perfection! It glides on and absorbs quickly. Blends to your skin color. Hydrates as well as prevents sun damage. You need to use enough to prevent sun damage, so follow directions carefully. I put it on first thing every morning.
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Reviewed in the United States on December 1, 2024