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Nagra Seven


2-channel portable digital recorder

Resolution Awards Winners 2014 RECORDERThe Nagra Seven has been designed as the successor to the Nagra LB, ARES-C,  ARES-BB+ and Nagra V recorders. It is a flexible device and can be adapted to a multitude of specific applications depending on the internal options installed. Based on an extremely high performance, simple to operate platform the addition internal I.S.D.N. or SMPTE/EBU time code boards adapt it to either the broadcast or film / TV markets. Optional WiFi/3G, WiFi/4G, internal editor and audio compressions are also available, to further dedicate the device for particular applications.

Key features

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.

Inputs panel


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).

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.

Editing and communication

If the optional editing option is installed, then graphic editing of the audio files is possible on the main display. Once the editing of the audio material is complete, files can be transmitted to the studio either over IP (through the ethernet connection using the File Transfer Protocol “FTP” connection) or via a GSM phone using 3G/4G or by Wifi (if the option is installed).

SMPTE / EBU Time code

The Nagra Seven has an optional internal time code board that works with all currently accepted frame rates including those for HD TV. It will handle both drop and non-drop frame rates, and will allow pull-up/down too.

Start / Stop

A 3.5mm miniature Jack socket is fitted for remote fader start/stop commands. This will allow the unit to be remotely controlled by a simple switch closure.


The Nagra Seven is supplied with a detachable battery box, into which 8 rechargeable “AA” cells can be installed. An optional lithium-polymer rechargeable battery pack, that will power the unit for about 8 hours is available. If phantom powering or transmission options such as WiFi or 3G/4G are used the battery life will be reduced.

Features list


  • Two discreet 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


  • SMPTE / EBU Time Code or I.S.D.N. options
  • Ethernet (Ftp and VoIP)
  • WiFi / 3G/4G option (Ftp and VoIP) / GSM
  • USB 2.0 communication


  • Large sunlight-readable color TFT touchscreen display
  • Internal 16GB Flash memory and removable SD Flash
  • Lightweight and battery operated

Technical specifications


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)
THD+N   <0.004%
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)

Accessories / Options

Powering options

2019004020 NLB-BB Battery compartment with charger for AA cells
8019190000 N7-LIB-HC High Capacity Lithium-Polymer battery pack with Hirose connector
2019180020 NLB-PSU Mains power supply

Additional accessories

2019180015   Leather carrying case for NAGRA Seven with shoulder strap 
2019180017   Carrying case tissue for NAGRA Seven with shoulder strap
EMB1900701   Aluminum transport case for NAGRA Seven
2019180010   Set of 2 replacement Stili for touchscreen

Internal options (For machine upgrades only)

7119187000    WiFi / 3G option including new side panel
7119191000   WiFi / 4G option including new side panel
7119185000   TC Option (Non-ISDN machines only) including new side panel
7119186000   ISDN option with audio compression (Non-TC machines only) including new side panel (With Wifi or not)

Software options

7019180010    Audio compression recording option MPEG


   Audio codec option AAC

Audio codec option OPUS

7019180020   On-board audio editor option
7019180030   Voice over IP option


2070115000   Micro USB cable for NAGRA Seven
2070119000   Micro A/B USB adaptor

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