Nagra seven - Explorer - Nagra

Nagra seven – Explorer

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The Nagra VII Explorer is compact and light-weight and its long battery life makes it an ideal companion to explore the world. Its intuitive user interface with trademark Nagra rotary selector and volume potentiometers make your job easy. To capture the sounds of nature, whether it be of a glacier cracking or a polar bear, you can rely on your Nagra to work flawlessly and deliver a faithfull sound as big as nature itself.

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Audio inputs

The Seven offers two analogue audio inputs and a single stereo digital input. It will record in PCM linear audio at sampling frequencies up to 192 kHz or in MPEG-1 layer II compressed audio formats if the compression option is installed. The inputs are equipped with traditional Nagra microphone preamplifiers for dynamic and phantom +48V microphones and offer a range of switchable sensitivities to accommodate all common microphones. AES-42 microphones can also be used as the recorder can supply the necessary 10V dc supply voltage on the AES input. The analogue LINE input will accept up to +24dB allowing it to be connected to a standard audio mixer in the field.


The Nagra Seven has a state-of-the-art color touchscreen allowing greater flexibility in the display modes and screens, but also eliminating all switches which are the weakest link in modern electronics. The audio levels, current operating mode and status of the recorder are shown on the touchscreen display mounted on the front of the unit. The screen is sunlight readable, and gives access to the entire menu structure of the recorder. Various programmable “short cuts” are available giving many personalization possibilities.


The Nagra Seven is fitted with an internal 16GB micro SD flash memory, that can be increased by the user if desired. The main extractable media is an SD memory card which inserts into the slot on the left side of the recorder (see picture above).

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USB 2.0 port

A micro-AB USB port allows the unit to be connected to a computer for file transfer. With an interface adapter, the same port can also be used to connect an external device such as a USB memory stick or computer keyboard for data entry.

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  • Two discrete audio channels
  • 16/24 bit, 192 kHz AD / DA
  • User programmable Pre-recording buffer
  • AES-42 compatible
  • Internal sample rate converter
  • Built-in channels matrix and M/S decoder
  • Post-production compatible (BWF files) full iXML metadata
  • Internal loudspeaker and headphone output
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Get an insight into the Nagra Pro Audio


Technical specification


Internal storage:Micro SD Flash memory card
Removable media:SD Flash memorycard
Disk format:FAT 16 / 32
Recording Method:Linear digital PCM, optional:MPEG 1 layer II
File type:16 / 24 bit Broadcast Wave File BWF (WAV)
A/D & D/A:24 Bit Sigma Delta
Bit rates:32 kbits/s up to 384 kbits/sec
Tracks:2 individual
Sampling Rate:44.1, 48, 88.2, 96, 176.4 and 192kHz
Recording capacity:1hr at 24 bit 48 kHz per GB of memory
Pre-recording buffer:Programmable
Display:Color LCD touchscreen
Level meters:On colour display



Digital input:XLR 3-pole / AES 42
Analogue inputs:2 x XLR Microphone (Dynamic, +48V Phantom) / line
Mic. input sensitivity:2.8, 10 and 40 mV/Pa selectable
Mic. input noise:Uin < 1µV (2.8 and 10 mV) @ 220Ω Uin < 1.6µV (40 mV)
Limiters:On microphone inputs
Line input sensitivity:Adjustable from -6 dBm up to +24 dBm for 0 dBFS recording
THD at 1 kHz:2.8mV Mic <0.2%, 10mV Mic <0.1%, line <0.1% (measured on AES out)
Frequency response:Mic, 10Hz – 75 kHz (+0 – 3dB), Line 10 Hz – 90 kHz (+0 -1dB) (measured on AES out)
Signal-to-noise ratio:>110 dB ASA “A”
Input level adj. range:42 dB Mic and from -6 to +24 dB Line
Input filters:LFA
Internal microphone:On the front panel
Crosstalk:Mic >70dB : Line > 110dB



Analogue line output:XLR 4.4V max (+15 dBm)
Crosstalk:>110 dB
Signal-to-noise ratio:>100 dB
Digital output:XLR AES-3 (24 bit or 16 bit)
Frequency response:10 Hz – 75 kHz (+0-3dB)
Headphones:Stereo 6.3mm (¼”) Jack 50 Ω
Internal speaker:0.3W



USB:Micro AB connector
M/S Decoder:Switchable
Ethernet:RJ 45



Dimensions:165 x 175 x 65mm (W x H x D) (Incl. battery box)
Weight:800g (1.75 lbs) (Incl. battery pack)
Power supply:External 15V
Power Consumption:Approximately 5W
Charge time:Approximately 3 hours
Battery life:>5 hours
Relative humidity:From 10% to 99% (non condensing)


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