The WA-412 from Warm Audio WA-412 4-Channel Mic Preamp with DIis a four-channel preamp for microphones and Hi-Z inputs housed in a 1 RU chassis. It's fashioned in the American console preamp style, providing a punchy bottom end and smooth trebles. Each channel gives you 65 dB of gain, polarity switching, a 20 dB pad, 48V phantom power, a switchable impedance selector for tonal shaping, and knobs for both input gain and output; this allows for both precise and creative gain structuring of sound. You can easily watch your signal via the on-board LED meter for every channel.

Under the hood, you'll notice that each channel uses a discrete and socketed 6-pin X520 op-amp, which helps in giving you a significant amount of headroom with minimal distortion characteristics. You'll also note the Altran input and output transformers. If you don't peak under the hood, you'll take comfort in the fact that these components are extending your low-frequency response all while maintaining a pleasurable and open sound.

Mic & Instrument Inputs    Up to 65 dB of Gain    Output Gain Attenuator    Transformer Balanced XLR & TRS Outputs    X520 Discrete Op-Amp in Every Channel    Switchable Input Impedance on Mic & Hi-Z    LED Metering    48V Phantom Power, Polarity & 20 dB Pad

Related Questions and Answers

Q: 1. can this be repurposed and used to pre amp a playback tape head? i know this is unconventional but i just need it to work. HELP!

A: The Rolls MP13 is a mic preamp so it is designed to receive a mic level signal but the output from the playback tape head is a line level signal. It could work, as long as you can control the output level from the tape head so it does not overload the input of the preamp, unless that is the desired effect that you wish to achieve.

Q: 2. Needing a amplified microphone to do voiceover on live dvd recording?

A: You don't need it, but a pre amp is a good idea!

Q: 3. Will this preamp boost an XLR signal a further distance than without using it? I have to cover a distance of ~300ft and am trying to assure no loss of signal.

A: The Rolls Mini-Mic Preamp is not really designed for boosting signal on a long cable run. For 300 feet, you should use high quality shielded audio cables to avoid signal loss and if you do need to increase the gain without adding noise, you might want to try the Cloud Microphones Cloudlifter CL-1 Mic Activator (B&H # CLCL1) which improves signal-to-noise ratio and improves the performance of passive microphone signals by driving stronger, cleaner signals over longer XLR cable runs.

Q: 4. Since this doesn’t work for IPhone, would it still work directly plugged into your PC for recording two mics? Like on Audition?

A: The Saramonic SR-PAX1 Two-Channel Audio Mixer, Preamp, Microphone Adapter's 3.5mm output could technically be plugged into a computer's microphone jack, but this is not how it is designed to be used and you would achieve much better results by using an audio interface instead.

Q: 5. Will this work to power and amplify a condenser mic fed into a 3-way line splitter, specifically a Whirlwind SP1X3LL?

A: The Rolls MP13 is able to power a condenser mic and the output can be connected to a splitter such as the Whirlwind SP1X3LL. The MP13 however only offers 36v of phantom power and would not be recommended for mics who require a full 48v. Many mics are able to operate at a range of voltages from 9v - 52v and you should check your mics requirements before purchase.

Q: 6. what is the length (in feet) of the included cable?

A: The Gotham GAC-7 7-pin cable included with the Warm Audio WA-47 microphone is 16.4 feet long (5 meters).

Q: 7. Would this be a good stereo-pair to stream Chorus concerts on YouTube?

A: The Warm Audio WA-14SP Large-Diaphragm Multipattern Condenser Microphone (Stereo Pair), B&H # WA14SP, could work very well for choral concert recording.

Q: 8. I have just realised that these are incopatible with my Klark Teknick CT1 Mic Booster as the CT1 requires 48V phantom power and the Rolls MP13 provides 24V. Can you recommend a quiet, affordable alternative?

A: ART Tube MP Preamplifier B&H # ARTUBEMP Single-Channel Tube-Based Hand-Selected 12AX7A Vacuum Tube Variable Input & Output Gain Control Ideal as a Tube DI Box XLR & 1/4" Connections Inexpensive, Professional Performance Exceptionally Low Noise A Staple in Many Studios

Q: 9. Which Rolls preamps are battery powered?

A: NO LO SE

Q: 10. Can you specify the weight of this product in Kg? (Including box)

A: The Warm Audio WA-2A Single-Channel Tube Optical Compressor (B&H # WA2AV2) has a package weight of 11.445 lb / 5.196kg.