The LINE IN (V-AMP PRO only) switch determines which signal source is processed by the V-AMP PRO, either (switch not pressed) the signal applied at the high- impedance INPUT jack, for example, your guitar, or (switch pressed) the line signal connected to the PRE DSP INSERT (LINE IN, 
).
The stereo PHONES jack allows you to monitor the audio signal with standard headphones (e.g. BEHRINGER HP series).
+Your V-AMPIRE/V-AMP PRO/V-AMP 2 automatically activates studio mode 1 (S1) when connecting headphones. In this mode the digital speaker simulations are activated. With the headphones plugged in, you are able to select any other configuration, e.g. for monitoring purposes (see also chapter 3).
+If you did not choose a speaker simulation with the current setting and connect headphones, the device will automatically switch to a speaker simulation. This will increase the listener’s sound impression. Please refer to table 5.2 for detailed information on the various speaker/amp combinations. However, you can intentionally change or deactivate the simulation when using headphones by selecting
“-” in the CABINETS mode (see 
C).
2.2 Rear panel/side
Both V-AMPIRE and V-AMP PRO feature a serial insert path for external effects, such as a Wah-Wah pedal. Connect the SEND/LINE OUT jack to the input of your effects device. The SEND/LINE OUT output is taken directly pre-digital processor (PRE DSP), which means you can use this jack also to record a “dry” direct signal without any effect added. Connect the RETURN/LINE IN jack to the output of your external effects device.
+When using the serial insert path, please do not set the effects device to 100% effects signal (“wet”); otherwise, the direct signal will be missing.
+Press the LINE IN key 
to route the signal applied at the RETURN/LINE IN to the V-AMP PRO. This function is useful, for example, to monitor a “dry” guitar signal with the V-AMP PRO before adding any effects.
+As soon as the VAMPIRE’s LINE IN (Return) is connected, the signal is automatically routed to the DSP. The input signal from the front will then be interrupted.
The ANALOG LINE OUTPUTS provide the stereo signal without analog speaker simulation applied (V-AMPIRE and V-AMP PRO only). Use these jacks, for example, to connect an external amp on stage.
The balanced LINE OUTs of the V-AMP 2 provide a stereo signal, e.g. for recording applications.
+You may use balanced or unbalanced plugs with the LINE OUTs.
Connect the POST DSP INSERT RETURN (IN) pair of stereo 1/4" jacks to the outputs of your external stereo effects device and use this path to return the signal sent out from the POST DSP SEND (OUT) outputs 
.
The GROUND LIFT switch disconnects (switch pressed)
the ground connection at the DI OUT outputs 
to effectively eliminate hum noise resulting from ground loops.
The DI OUT output provides the balanced stereo signal of your V-AMPIRE/V-AMP PRO. Connect this output to two balanced microphone inputs on your mixing console. With configuration modes L1 and L2 the maximum level reduction is -10 dBu so that you can directly connect them to the mic inputs of your mixing console.
The POST DSP SEND (OUT) stereo output (V-AMP PRO only) allows you to connect the inputs of an external stereo effects device. The signal provided here is the same as the signal present at the digital outputs. Unlike the SEND/
LINE OUT output 
this signal is post-DSP. If the two
corresponding RETURN (IN) jacks 
are not used, the
ANALOG LINE OUTPUTS 
provide an identical signal.
The S/PDIF output provides the digital output signal of your V-AMP PRO.
The AES/EBU output (XLR connector) delivers the digital signal of your V-AMP PRO in an AES/EBU format, provided that AES/EBU has been selected as digital output format
(please refer to the 2nd note under 
E).
+The coax-type S/PDIF and balanced AES/EBU output are using the same output transformer and must therefore not be used at the same time. To change between the S/PDIF and AES/EBU formats please
select the digital out menu (see 
).
The WORDCLOCK BNC jack is used to connect equipment for the external synchronization of your V-AMP PRO. This high-impedance jack has no internal terminating resistor (75 Ohms).
This is the MIDI OUT/THRU jack. It is configured as MIDI
OUT but can be set to act as a MIDI THRU jack (see 
A).
Use the MIDI IN to connect a foot controller, for example, the BEHRINGER MIDI FOOT CONTROLLER FCB1010 (see chapter 8.3 for details).
SERIAL NUMBER. Please take the time to fill in and return the warranty card within 14 days after the date of purchase, so as to benefit from our extended warranty. Or register online at (www.behringer.com).
You find the serial number of the V-AMP 2 on the base of the casing.
FUSE HOLDER/VOLTAGE SELECTOR (V-AMPIRE/V-AMP PRO only). Before connecting the unit to the mains, make sure that the voltage setting matches your local voltage. A blown fuse should only be replaced by a fuse of the same type and rating. On some units, the fuse holder can be switched to one of two positions, i.e. 230 V and 120 V. When operating the unit outside Europe at 120 V, a higher fuse rating is required (see chapter 8 “INSTALLATION”).
The mains connection is on an IEC receptacle (V-AMPIRE/ V-AMP PRO only). An appropriate power cord is included.
V-AMP 2: Connect the enclosed power supply unit via the AC IN socket. If it is connected to the mains, your V-AMP 2 will switch on automatically.
Connect the stereo jack plug of your FS112V footswitch (included) to the FOOTSWITCH socket (V-AMPIRE/V-AMP 2 only). This will enable you to recall the presets from one bank. To switch on the tuner, hold down the DOWN button on the footswitch for more than two seconds. You can also switch the tuner off again using the same button.
The AUX IN jack socket (V-AMPIRE and V-AMP 2 only) enables you to feed in additional stereo signals on the V-AMP 2, to play with a drum computer or playback etc.
The AUX LEVEL control (V-AMPIRE and V-AMP 2 only) is used for determining the volume of the signal received at the AUX IN input.
These outputs (V-AMPIRE only) are for connecting two external loudspeakers.
+Without external loudspeakers the internal speaker runs at 70 Watts mono. The left output (the internal speaker automatically shuts off) allows to connect a loudspeaker with 4 W of impedance and 100 Watts power. At the right output you may connect an 8 W/ 50 Watts speaker that runs together with the
