Empress Effects Buffer plus Manuel utilisateur

user manual

Thank you for purchasing the Empress Buffer+ Stereo. This pedal

was designed to be the complete I/O interface for your pedalboard

while maintaining the highest fidelity of your guitar signal.

We've kept all the features of our Buffer+, such as the foot-

switchable boost, input pad, noise filters, and variable input loading,

and have added a ton of additional features such as input meters

and clip level indicators, AB/AY switching, external switch control,

and of course, full stereo in/out connectivity.

On top of all that, configurable signal routing ensures that the

Buffer+ Stereo will handle just about any rig you can throw at it. So

before you plug in, read The Initial Setup guide to ensure your

Buffer+ Stereo is ready to rock!

- Cody Gilchrist, lead designer.

tuner out

loop out 1

in 2

in 1

out 1

out 2

buffer

LED

Meter

LED

Meter

LED

Meter

LED

Meter

input

pad

input

pad

pre-

emphasis

noise filter

pre-

emphasis

noise filter

de-

emphasis

noise filter

de-

emphasis

noise filter

boost

boost isolation

x-former

summing

loop in 1

loop in 2

Buffer+ Stereo Simplified Circuit

** If nothing is plugged into in 2,

the signal from in 1 will be

automatically routed to loop out 2.

This doesn't apply to Instrument

Select or FX Loop Modes.

loop out 2

*** Signal from the loop outs is

internally passed to the loop

ins if nothing is connected to

the loop in jacks.

* in instrument select modes,

the tuner out will be fed from

the selected input, otherwise it

is always fed from in 1.

***

Controls at a Glance

stompswitch: function assigned by the stomp function

toggle swith. Can engage/disengage the boost, switch

between A and Y, or A and B. Hold for 1 second to mute

out 1 and out 2 for silent tuning.

stomp function: sets the function of the stomp switch. In the boost

position, the stomp switch will toggle the boost circuit on and o. In

AB position the stomp switch will toggle the active output between

out 1 and out 2. In the AY position the stomp switch will toggle the

active output between out 1 and both out 1 and out 2.

*note: some modes do not incorporate all of the dierent stomp functions. In

those cases the toggle switch will not have any eect on the stomp function.

input pads: pads the input by either 6dB or 12dB. This can be

useful for padding a very hot signal from an fx loop or active

instrument. It can also be useful for matching levels from dierent

instruments (ie. passive and active pickups, or single coil and

humbucking guitars).

input LEDs: illuminate green when signal is present. If the signal

gets too hot and clips the input, a red clip indicator LED will

illuminate and hold for 2 seconds.

boost: sets the amount of boost to be applied when

the boost is engaged. Ranges from 0 to +30dB.

Controls at a Glance

output LEDs: indicate which outputs are active.

noise lter: helps eliminate certain types of noise from your

signal path, especially white noise and hiss generated from

digital pedals. It will reduce this noise on any pedal that is inside

its dedicated loop.

For stereo noise reduction, make sure to set both the noise lter

switches to the same setting. This is also true for any operating

mode in which the signal is being sent out of loop out 1 but

returning into loop in 2, such as the FX Loop Modes 11 and 12.

Note that when using the noise lter with distortion and overdrive pedals in

the loop, you might notice a change in the high frequency response. If this is

the case, it can usually be corrected by some gentle EQ, or you may opt to put

your drive pedals before the buer+ stereo.

out 2 polarity: inverts the polarity of the signal from out 2. This

can be useful if you have an eect that inverts polarity, or if you

have stereo amps widely spaced.

input 1 loading: varies the load seen by your guitar pickups at

in 1. Turning the knob fully clockwise increases the load and

allows the full frequency range of your guitar to pass through. As

you turn the knob counter-clockwise you'll begin loading down

your guitar, changing the response of the pickups and rolling o

some high frequencies.

Initial Setup / Startup Configuration

The Startup Configuration is where you'll set the Buffer+ Stereo's

operating mode, choosing from 12 available modes. Here, you can

also configure an external momentary switch to either activate the

boost circuit (on/off) or to instantly mute the output for silent

tuning.

To enter Startup Configuration, connect power to the pedal

while holding down the stomp switch. The blue boost LED will flash

quickly to let you know you've entered Startup Configuration. The

current mode will now be displayed via the signal indicator LEDs.

Pressing the stomp switch will scroll up to the next available mode.

As you scroll through the available modes, the signal indicator LEDs

will light sequentially to show you which mode will be selected upon

exiting Startup Configuration.

For example, Mode 1 starts with the green in 1 LED lit. When you

press the stomp switch the in 1 LED will change to orange, and you

are now able to select Mode 2. Press it again, the in 1 LED will

change to red, and you are now able to select Mode 3. Press it

again and the in 2 LED will be lit green, and you are now able to

select Mode 4 etc. This pattern continues until you reach Mode 12

and then starts over again at Mode 1.

To configure an external switch (momentary - normally

open), use the stomp function toggle switch. Set it to the left

position (Boost) to use an external switch as a boost. Set it to the

right position (AY) to use an external switch as an instant silent

tuning switch. The middle position (AB) is for no external switch.

The red "tuner on" LED will flash each time you change the switch

position to show you it has registered a change.

To save your settings and exit Startup Configuration,

hold down the stomp switch for 2 seconds. The blue boost LED will

flash quickly, followed by the corresponding mode LED to

acknowledge your selection. The Buffer+ Stereo will now enter your

selected mode every time it starts up, unless you change it again by

going back into the Startup Configuration.

Mode 1 - Un-summed Loop Ins

This is the standard operating mode for a stereo setup. In this

mode, loop in 1 and loop in 2 are sent to out 1 and out 2

respectively.

A wet/dry rig can be created by using a mono effects chain

returning to loop in 1 and leaving in 2 and loop in 2 disconnected.

this will route in 1 directly to out 2. Amp 1 will be wet, amp 2 will

be dry.

Mode 2 - Summed Loop Ins

This mode uses summing to take stereo effects and bring them back

to a mono output. Perhaps the most useful case for this mode

would be for someone who sometimes runs a stereo rig, but also

plays gigs with a mono rig. You could leave your pedalboard

connected in a stereo configuration and just switch over to mode 2

for gigs with only 1 amp.

In this mode, loop in 1 and loop in 2 are sent to both out 1 and out

2. The signals are summed internally.

Mode 3 - Loop In 1 Only

This mode is designed for a mono effects chain feeding 2 amps.

In this mode, loop in 1 is sent to both out 1 and out 2. loop in 2

cannot be used.

This mode is for using a mono in/mono out effects chain and

sending the signal to two amps. This mode is necessary so that the

dry signal, which would normally show up at loop in 2 when nothing

is connected to it, does not get to the output.

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