Get better sound from your tube microphones with the MP1S Stereo Power Supply Set from Grimm Audio. Whether you're using vintage or contemporary models, the MP1S will help you get the best possible sonic performance from your investment. The engineers at Grimm have leveraged their extensive experience designing the AD1 converter and CC1 master clock to ensure this boutique power supply takes your microphone pair to it's full potential. This S version is a rackmountable dual-channel supply set designed for use with two mics for stereo and does not include feet.

Even if the power supply for your vintage microphones is still functioning, the MP1S' stable power and exceptionally low noise floor can give you significantly improved sonic results, especially considering that the voltage settings are customized at the factory for optimal performance with your mics. The unit offers discrete voltage regulators, a shunt regulator for the anode supply and a high-precision filament supply. The anode supply offers a noise floor as low as -100 dBV, which, on average, is 20 dB better than existing supplies, while the shunt design turns the regulator into an active decoupling device, eliminating electrolytics.

The MP1S includes two multipin XLR cables that you can attach to your existing microphone cables.

Ultralow Noise, High-Voltage Supply    Dual-Channel Rackmount Version    Large Isolation from Mains Disturbance    Shunt Anode Voltage Regulator    Factory Set to Match Microphones    High-Precision Filament Supply    Includes Multi-Pin XLR Cables

• In many classic mics, the heater voltage is also used to bias the grid of the amplifying tube in the microphone, implicating an open gateway from the heater supply to the sensitive input of the mic’s amplifying stage. Grimm therefore chose to design a clean and ultralow-noise discrete voltage regulator for the heater supply as well. It features very low drift to ensure the heater voltage always remains within specs.
• The MP1S features a specially designed discrete shunt high-voltage regulator fed from the current source to maximize suppression from mains-induced anomalies. It also offers very low noise (typically -96 dBV or 16 uV at 20 to 20,000 Hz unweighted). More importantly, this shunt supply sounds more natural than the more commonly used modern series regulators, due to the absence of electrolytic capacitors at the output.
• Both the high-voltage and the heater supplies have an extra crowbar protection circuit that will switch on in case one of the supplies breaks down. This is an extra line of defense to protect the valuable tube in your microphone.

Related Questions and Answers

Q: 1. Could I use this to power my Rode NTG1 and output to a XLR to 3.5mm adapter cable to input into a Canon 90D?

A: Yes, the Xvive Audio P1 Portable Phantom Power Supply with Rechargeable Battery can be used to provide phantom power to the Rode NTG1 Shotgun Microphone, and its output signal can be adapted for a 3.5mm input connection to a DSLR camera.

Q: 2. Does this work for both moving coil or moving magnet phonos?

A: Unfortunately the manufacturer does not specify which cartridges are recommended, however we would recommend this unit for use with MM cartridges for best results.

Q: 3. if the vacuum tube is dead, any spare vacuum tube that i can repair my self?

A: I would strongly advise against home repairs. First you will void the warranty as you are not a Sony repair technician. The mic takes a 6AU6 vacuum tube but with a mic at that price point it's not like swapping a 6L6 out of a Fender amp. I would very cautious as you say the tube is dead. Cracked is more common due to mishandling of the mic when the tube is to hot. But dead could be something more complex as to why it's dead. I would advise returning it to Sony and let them fix it.

Q: 4. Are these intended to be used more than once? Or are they supposed to be disposed of after each use?

A: The Remote Audio Foamies Foam Mounts for Lavalier Microphones can certainly be used more than once.

Q: 5. Will the female XLR output fry my Tentacle Track E with Phantom Power?

A: The female XLR connection on the Xvive Audio P1 Portable Phantom Power Supply with Rechargeable Battery accepts an input connection and supplies phantom power to connected microphones. The XLR male output connection on the P1 could be adapted to pass signal along to the Tentacle Sync TRACK E Pocket Audio Recorder.

Q: 6. Whether the output can be directly inserted into the camera Mic jack to shoot video?

A: The output of this portable phantom power pack can be connected to any mic level audio input with an XLR connector, including cameras, interfaces, and audio recorders.

Q: 7. Is this a 110 ohm cable thatI can use for my GRIMM MU 1 AEB out to DAC/preamp ?

A: The Grimm Audio Stereo Pair of Audio Cables with XLR Connectors (6.56'), BH # GRSQM2X, is not impedance rated.

Q: 8. Can the Xvive P1 Phantom PS be connected to a TS mono mic level audio input using a XLR female to 3.5 TS mini jack cable?

A: Yes, you can use the Xvive Audio P1 Portable Phantom Power Supply to connect an XLR microphone that requires phantom power to a 3.5mm microphone input using an XLR female to 3.5mm TS male mini-jack cable.

Q: 9. What are the connections needed to recharge? I'm hoping it is usb-c?

A: The USB port on the Xvive P1 Portable Phantom Power Supply is micro-USB Type-B. There is a USB cable included which is micro-USB Type-B to Type-A. The USB port can be used for charging the internal battery as well as for powering the P1.

Q: 10. Harmonic distortion is specified at 0.5%. How much greater or Is this a typo?

A: That is a TYPO. It should read 0.5% (Info from the Crown XLS 1002 Manual).