A Designs P-1 Microphone Preamp

500 Series Preamp Module with Phantom Power, Pad, Phase Switch, and Gain Control
A Designs P-1 Microphone Preamp image 1
A Designs P-1 Microphone Preamp image 1
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A Designs P-1 Microphone Preamp
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A Preamp Module with Classic Tone!

A Designs P-1 preamp module is based on the company's popular Pacifica preamp, and gives you exceptional sound quality with the classic vibe of some of the great vintage preamps. Featuring a DI, 48V phantom power, 20db pad, and phase buttons, and a gain control, the P-1 excels at adding just the right tonal "color" to the input signal, and flatters any microphone. If you want to add a touch of vintage tone to your console, or just want to improve the range of your studio's tonal capability, plug in the A Designs P-1 preamp module.

A Designs P-1 Preamp Module Features:
  • 48-volt phantom power
  • 20dB pad
  • Phase switch
  • Custom-wound transformers
  • Thumb screws for easy install and un-install
  • Cast aluminum rotary gain control knob
The P-1 preamp module is a great way to add some vintage color to your console!

Additional Media

500 Series Buying Guide
New In Stock At Sweetwater

Tech Specs

Preamp Type Solid State
Number of Channels 1
Phantom Power Yes
Manufacturer Part Number P1 Mic Pre

Customer Reviews

Based on 9 reviews
Write your review

Smooth, clean and great high end

Big upgrade from the focusrite 428. I have 4 of the P1s now and am considering 3 more. I use them for tom toms and guitar. I am sure they would be very good for anything.I have vintage neumann pres v476b very colored, millenia as you know clean with attitude, a neve 517 which doesn't like to be slammed but great sound. Have a stereo tube pre eq which has a nice round sound digitech vtp with Telefunken tubes I put in and my yamaha o1v97i board that is very very clean sounding also.P1 handles the drum transients the best to my ear. Musical, dimensional and clear. Although I am surprised how well my yamaha does. I record drums almost every day and I am picky. Went with p1s over api 512 because they are less. The pad engaged is nice floor tom I might add. You will dig it.

Clarity and Warmth

Talking about sound is like dancing about architecture, according to the late Kurt Vonnegut. So we resort to these buzzwords like "clear," "warm," "musical," and any manufacturer of cheap Chinese gear with light-up tubes can lay claim to these properties. Reading enough reviews loaded with this drivel will drive a musician and potential purchaser mad. I am here to tell you that if you are experiencing flat, digital signal coming into your computer, uninspiring and cold, this is the preamp that will add that extra harmonic content that is required when not going to tape. the P-1 is loaded with custom Cinemag transformers, which are so much more forgiving than your DC-coupled interface preamps. Plug your SM57 into it and you'll immediately understand the difference a high-quality preamp makes, especially on dynamic mics. Microphones were designed to pass through circuitry like this. I treat the P-1 like my console preamp and golden channel - everything is tracked through it, one at a time, as is the workflow at my overdub and mix room. It stacks up to a three-dimensional space that is simply not there otherwise. I won't ever sell this preamp, regardless of what other pre's I purchase. My voice through this was a revelation, as was the bass and synth DI. Guitars, backing vocals, every single source develops a glow and pleasant, slight high frequency rolloff that I can nearly guarantee will add all of those obnoxious qualifiers that gear slingers attach to their reviews. I am in no way associated with this brand or product, just a musician recording himself for a decade now, and I have used dozens of preamps - this one is my favorite. When something is not sounding right, 10 out of 10 times it is not the fault of the P-1. I don't think twice about the quality my preamp, as I know I have that of the highest caliber. This device is of such high build quality, I bet you could throw it off a building and it would be fine. If I had to make a record on a desert island, this would be my preamp. Make sure to get a good power supply for it - I am powering it with a Rupert Neve Designs R6, and could not be happier with the depth of my sounds.
Music background: Professional Film Composer and Producer


This pre is amazing.....Fat and rich but not as heavy as my Neves, plus the high end has this electric feeling to it that makes everything sound really alive. Kick the pad in and crank the gain for some extra girth. The DI is nice and punchy as well. So glad I have this in my arsenal!

Fat Sound

This was my first experience with the Pacifica sound, and it has been a great one so far. It's big and warm with the kind of character that seems like it would enhance just about any thing that passes through it. I have plenty of clean pre's (ala Avalon), and nice tube pre's (ala UA 610, 710), but this one stands out as the best of both worlds. Big warm character that starts out clean, but can be driven into a more saturated sound if it's pushed. My favorite element is that it's so big sounding even at low levels. Very nice - there are more channels in my future!
Music background: Pro musician, engineer, producer, arranger.

Amazing Preamp!

Wow. This preamp is amazing! I owned a pair of Great River press for about a year and i love them and will probably keep them forever. I then decided i wanted to try another flavor and i got a pair of these. Let me tell you, they sound gorgeous. On vocals and acoustic guitar, the sound is so open but with character and color. The top end is very unique in a way i am sure almost everyone would like. I tracked a hi hat into this preamp through my UBK Fatso and the result was astonishing. Both my client and intern told me it was the best hi hat sound they had ever heard. I have tracked vocals through my CL1B and the sound was pristine and just incredibly pretty. Long story short... For acoustic guitar, clean electric guitar, and overheads, this is my favorite preamp. For vocals, it is tied with my Great Rivers.. i like auditioning both the same way i audition my U87 and Manley on the singer, then pick the best combination. If you want an amazing all around first preamp, this is a great choice. For a singer/songwriter, i cannot think of a better choice, period. If you have other preamps like Neves and API and want something different and unique, this is a great option. Last i want to add that dealing with A Designs has been a pleasure. My units have not had any issues, but i have called them to ask them questions about these pres and some of their other products (i am considering a Hammer or EM-EQ2) and Peter, the owner, really took the time to give me all the info i needed. With a company like A Designs - and Great River, too - I know that i will NEVER have tech support issues. You really cannot say the same thing about some of these bigger companies. Something to consider!
Music background: Producer and Engineer

Sweetwater Advice

Carson McClain

A mini Pacifica.... sigh... there is a God! If you love the sound of the Pacifica and only need one channel for your 500 rack, this is the module to get. Great sound all the same features and it fits in your A Designs 500 rack. What a great pre.
See also: 500 Series Pre, A Designs, A Designs 500 Series Preamps