d:vice MMA-A - Hi-Fi System DPA - Free user manual and instructions

Product Type	Digital Audio Interface (Microphone Preamplifier & A/D Converter)
Input Channels	2 (MicroDot inputs I and II)
Supported Microphones	DPA microphones with MicroDot connector (d:screet, d:fine, d:dicate, d:vote series)
Connectivity	Micro USB-B to iOS (Lightning) and Micro USB-B to PC/Mac (USB-A)
Cable Length (supplied)	100 cm (39.4 in) and 30 cm (11.8 in)
Sample Rates	44.1, 48 (default), 88.2, 96 kHz (set by 3rd-party app)
Resolution	24 bit
Frequency Response	20-22 kHz ±0.2 dB (Fs=48 kHz); 20-40 kHz ±0.2 dB (Fs=96 kHz)
Total Harmonic Distortion (THD)	< -100 dB, 0.001% @ 1 kHz @ -10 dBFS
Dynamic Range	Typ. 114 dB
Noise Floor	-114 dBFS, A-weighted
Gain Control	Adjustable via slider in app; individual or linked per channel
Low Cut / High Pass Filter	80 Hz, 2nd order, individual per channel
Modes	MONO, STEREO, DUAL (individual gain and filter per channel in DUAL)
Presets	4 user-definable presets storing gain and filter settings
Monitoring	Headphone output via connected iOS device (requires headset)
Lock Function	Locks gain and filter settings to prevent changes by 3rd-party apps
Power	Bus-powered via Lightning or USB 2.0; <100 mA current consumption
Weight	50 g (1.8 oz)
Diameter	56 mm (2.2 in)
Temperature Range	0°C to 45°C (32°F to 113°F)
Compatible Operating Systems	iOS 10 or later, macOS, Windows
Warranty	2 years limited
Cleaning	Wipe with damp cloth (warm water); avoid solvents

Frequently Asked Questions - d:vice MMA-A DPA

How do I connect the d:vice MMA-A to my iPhone?

Use the supplied Micro USB-B to Lightning cable. Connect the Micro USB-B end to the d:vice and the Lightning end to your iPhone. The d:vice will be powered by your iPhone and the d:vice app is available from the App Store.

What is the difference between MONO, STEREO, and DUAL modes?

In MONO mode, if only one microphone is connected, its signal is sent to both left and right outputs. In STEREO mode, both mics are used with a single gain control for stereo recording (requires matched pair). In DUAL mode, each input has independent gain and filter settings.

Can I use the d:vice with a PC or Mac?

Yes, connect the d:vice to a USB port on your PC or Mac using the supplied Micro USB-B to USB-A cable. It will be recognized as an external sound card and work with most recording or broadcasting software.

How do I create and use presets?

After adjusting gain and filter settings to your liking, press and hold one of the four preset buttons for three seconds to save. To recall, simply press that preset button the next time you connect.

What does the LOCK button do?

The LOCK button prevents third-party apps from changing the gain and filter settings. Saved locked settings are automatically activated when you reconnect the d:vice.

Can I monitor audio while recording?

Yes, use the MON button to send audio to headphones. A headset must be connected to the iOS device before connecting the d:vice. For iPhone 7, a wireless headset is recommended due to the Lightning port.

What microphones are compatible with the d:vice MMA-A?

The d:vice is designed for DPA microphones with a MicroDot connector, including the d:screet, d:fine, d:dicate, and d:vote series. It can also work with other microphones using an appropriate adapter (not supplied).

How do I clean the d:vice?

Use a damp cloth with warm water. Avoid solvents like gasoline, acetone, alcohol, or turpentine, as they can damage the surface.

What sample rates are supported?

The d:vice supports 44.1, 48 (default), 88.2, and 96 kHz sample rates, adjustable by compatible third-party apps.

Why is my microphone only recording in mono?

If only one microphone is connected, the d:vice automatically selects MONO mode and routes the signal to both channels. To record stereo, connect two microphones and select STEREO mode.

USER MANUAL d:vice MMA-A DPA

The d:vice™ MMA-A Digital Audio Interface is a high-quality dual-channel microphone preamplifier and A/D converter. It allows you to capture crystal-clear audio via your favorite recording / broadcasting apps. The d:vice™ can be used with most DPA microphones.

d:screet™ Miniature Microphones

d:fine™ Headset Microphones

d:dicate™ Recording Microphones

d:vote™ Instrument Microphones

Two cables are supplied with the d:vice™ MMA-A: One Micro USB-B to iOS (Lightning) and one Micro USB-B to PC / Mac (USB-A).

Getting started

Connect your DPA microphone(s) to the MicroDot input(s) on the d:vice™, denoted I and II. (If only one mic is connected to either input, the signal will be interpreted as MONO and automatically sent to both output I and II.)

Download the d:vice™ App

Download and install the d:vice™ App from the Apple App Store.

Please note that the d:vice™ will work with most 3 ^rd -party apps and therefore can be used in various situations including live broadcasts, as well as audio and video recordings.

The d:vice™ MMA-A can be used right out of the box but to take full advantage of it, please refer to these instructions to get started using the d:vice™ App.

GAIN

Use the GAIN slider to adjust input levels. Slide to the right to increase amplification, to the left to decrease. Make sure to keep an eye on the level meters when you are adjusting gain. The meters should stay in the green and yellow areas.

FILTER

The FILTER button (low cut / high pass) cuts out unwanted, low-end frequencies (rumble) that can decrease the intelligibility of your recorded audio. In most cases we suggest using the FILTER button and if, for example, you are recording outside near a road with traffic, this setting is essential.

MONITOR

Use the MON button to send audio to your headphones so you can hear what you are recording. Please note that a headphone must be connected to the iOS device, otherwise the button will not activate and you'll be prompted to connect a headset. If the headset includes a microphone it must be connected prior to connecting the d:vice™ via the Lightning connector. This is due to the iOS 'last entry active' nature of operation. (We recommend using a wireless headset when using an iPhone 7.)

LOCK

Use the LOCK button to block 3rd party apps from controlling gain. Gain settings can be controlled and saved on the d:vice™ for use in your favorite recording / broadcasting apps. The lock button also controls the setting of the low cut / high pass filter. Saved locked settings are automatically activated the next time you connect to the d:vice™.

MONO

If only one microphone is connected to either input I or II, MONO is chosen automatically. The mic input will be routed to both left and right output. Only one GAIN slider and FILTER button will be available in this mode.

STEREO

Use STEREO when you need to capture sound sources in stereo. Both microphones are controlled with one GAIN slider. Example: Ambiance sounds can be recorded in stereo using two mics that have the same sensitivity.

Important: When using STEREO you must use two mics that are optimized for stereo recording, for instance the specially-selected d:screet™ 4060 pair included in the d:vice™ Kit VIDMK-4060-S.

Other available kits include: SMK4060, ST4006*, ST4011*, ST2006*, ST2011*

* Must be used with DPA MMP-G amplifiers for connection to MicroDot.

DUAL

Use DUAL when the gain must be set individually for input I and II (for example, with two different microphone types or in situations where two people with different voice levels are to be recorded). The FILTER buttons are also individual in this situation.

PRESETS

Presets store your preferred settings for specific microphone(s) and make your set up easier. After choosing your settings, create the preset by pushing the numbered preset button of your choice for three seconds. The next time you plug in the same mics, push your preset button and you are ready to go – no adjustments necessary.

Circular arrangement of evenly spaced rectangular bars radiating from a central circle (no text or symbols)

For use with PC / Mac

Connect the d:vice™ MMA-A to the USB input on your PC / Mac. The d:vice™ will now work as a normal external soundcard and you can use your regular programs to record or broadcast the audio from the connected microphones.

Close-up of a USB connector with a black cable and metallic base (no text or symbols visible)

Cleaning

The black surface of the d:vice™ is fairly scratch resistant, but is sensitive to detergents. Avoid using solvents (such as: gasoline, acetone, alcohol, turpentine, etc) for cleaning purposes. A damp cloth with warm water is recommended.

Microphone placement and usage

Please refer to the manual(s) for the specific microphone included within the package.

Compatible with

Mac / PC / iOS

Requirements

iOS version: 10 or later

Connection / Power: Lightning & USB 2.0

Made for

iPhone 7 Plus, iPhone 7, iPhone 6s, iPhone 6, iPhone 5, iPad Pro (12.9-inch), iPad Air, iPad Air 2, iPad mini 4, iPod touch (6th gen).

d:vice™

Digital Audio Interfaces

Specifications

Noise floor

-114 dBFS, A-weighted

Frequency range

20-22 kHz ±0.2 dB (Fs = 48 kHz)

20-40 kHz ±0.2 dB (Fs = 96 kHz)

Total harmonic distortion (THD)

THD < -100 dB, 0.001% @ 1 kHz @ -10 dBFs

Dynamic range

Typ. 114 dB

Full Scale Output

1 Vrms @ 0 dB Gain

Supported sample rates

44.1, 48 (default), 88.2, 96 kHz

Sample rates can be set by 3^rd -party app

Resolution

24 bit

Filter (low cut / high pass)

1. Order @ 80 Hz, individual per channel

Weight

50 g (1.8 oz)

Diameter

56 mm (2.2 in)

Temperature range

0^ C to 45^ C (32°F to 113°F)

Current consumption

<100 mA

(The d:vice™ gains power via the apparatus it is connected to.

This equates to approx. 6-7 hours of audio capture tested on a new iPhone 6 or 7.)

Service & repair

If you are not satisfied with the characteristics exhibited by this product, please go to dpamicrophones.com/service for instructions.

Warranty

The d:vice™ Digital Audio Interface is covered by a two-year limited warranty.

CE marking

This product conforms to all relevant directives approved by the European Commission.