Evolution 222
Stereo Preamplifier
THE LEADER IN AUDIO ENGINEERING
QUICK SETUP GUIDE
Thank you for your purchase of the Krell Evolution 222 Stereo Preamplifier. The Evo-
lution 222 features Krell Current Mode circuit topologies, Krell CAST technology,
and a robust power supply for exceptional audio performance. A thoughtful suite
of menu options ensures that the Evolution 222 can be customized for the greatest
ease of operation.
Getting Started
The owner’s reference for this
product, including a detailed
description of features, technolo-
gies, and warranty is available on
Please contact your authorized dealer, distributor, or Krell if you have any questions
not addressed in the owner’s reference.
The preamplifier’s front panel provides power on, input and zone selection, level
control, menu functions, and status display. The rear panel allows connection to
audio sources, power amplifiers, AC power, and other system components.
Overview
The remote control provides power, preamplifier, level control, navigation and
customization functions, CD and DVD player controls and menu configuration.
Do not place the preamplifier where it could be exposed to dripping or splashing.
WARNINGS
Do not remove or bypass the ground pin on the end of the AC cord. This may cause radio fre-
quency interference (RFI) to be introduced into your playback system.
The ventilation grids on the top and bottom of the preamplifier must be unobstructed at all
times during operation. Do not place flammable material on top of or beneath the component.
Turn off all systems’ power before connecting the preamplifier to any component.
Make sure all cable terminations are of the highest quality, free from frayed ends, short circuits,
or cold solder joints.
THERE ARE NO USER-SERVICEABLE PARTS INSIDE ANY KRELL PRODUCT
1. Open the shipping box and remove the top layer of foam. You will see these
items:
Unpacking
Note
1 Preamplifier chassis
1 IEC connector (AC power) cord
1 Remote control
2 AAA remote batteries
1 T-10 Torx wrench for remote
1 Quick Setup Guide
Save all packing materials. If you
need to ship the Evolution 222
in the future, repack the unit in
its original packaging to prevent
shipping damage.
2. Carefully remove all items from the shipping box.
3. Place the preamplifier in a safe location and remove the protective plastic wrap-
ping.
We recommend that you place the preamplifier on a firm, level surface, away from
excessive heat, humidity, or moisture. The preamplifier requires at least two inches
(5 cm) of clearance on each side and at least two inches (5 cm) of clearance above
to provide adequate ventilation. Installations inside cabinetry may need extra venti-
lation.
Placement
The Evolution 222 preamplifier has superb regulation and does not require a dedi-
cated AC circuit. Avoid connections through extension cords or multiple AC
adapters. High quality 15 amp AC strips are acceptable. The use of AC line condi-
tioning devices is not recommended. The features provided by these devices are
already on board the Evolution 222.
AC POWER GUIDELINES
This product complies with the EMC directive (89/336/EEC)
and the low-voltage directive (73/23/EEC).
Krell Evolution 222
1
Figure 3 The Evolution 222 Back Panel
tors (for use with Krell
CAST-equipped ampli-
fiers).
nents to be turned
on/off, or to/from stand-
by, through the remote
control.
17 Tape input
23 RC-5 in
This remote connector
Back Panel
Functions
This single-ended input
pair is for use with a
tape source.
is used with third-party
remote control systems
that provide RC-5 (IR)
data via a wired con-
nection. A stereo tip,
ring, sleeve 1/8” mini
connector is used in the
following configuration:
Tip = RC-5 data
21 CAN link
These RJ-45 link con-
nectors are connected
in parallel. They are
used to operate pream-
plifier channels in linked
mode. See CAN Link, in
the owner’s reference
for more details.
For more information,
see Input Trigger in the
owner’s reference.
18 C-1 and C-2 inputs
The two CAST inputs
have 4-pin bayonet
connectors, for use with
Krell CAST-equipped
input devices.
25 Phono power port
This is for connecting
the preamplifier to a
Krell KPE phono stage.
See the KPE owner’s
reference for more
details.
15 Balanced inputs: B-1
and B-2
These XLR balanced
analog source input
connectors are wired
as follows:
19 Tape output
Ring = +5 V
Sleeve = GND.
This single-ended out-
put pair is used for
recording the selected
input source.
22 RS-232 port
24 12 VDC in/out
This port receives mes-
sages from a computer-
based control system,
providing integrated
control of all preamplifier
functions. For details,
see the developer's ref-
erence: RS-232 Port:
Sending Commands
and Interpreting Data.
(12 V trigger)
Pin 1 Ground
Pin 2 Non-inverting
Pin 3 Inverting
26 IEC power cord
receptacle
There are 2 outputs and
one input that send and
receive 12 VDC power
on/off (trigger) signals to
and from other Krell
components, and other
devices that incorporate
a 12 V trigger. This
20 Main outputs
This is for use with the
provided AC power
cord. Plug the other end
into an AC Mains supply
capable of supplying
the correct AC voltage
and current for the
power supply.
The Evolution 222 is
equipped with one bal-
anced XLR output pair,
one single-ended RCA
output pair, and two
CAST output pairs with
4-pin bayonet connec-
16 Single-ended inputs:
S-1, S-2, and S-3
There are 3 single-
ended analog source
inputs with RCA con-
nector pairs.
allows other compo-
The menu button or key (5)
allows you to configure
functions. Enter the menu
to view the list of config-
urable functions.
or key. Once you are in
the menu, you can
press the menu button
or key to exit the menu.
BACK
Configurable
Functions
Customizing the
Evolution 222
Select back to scroll
backwards through the
menu hierarchy, or to
exit a menu option with-
out confirming that
option.
AC Mains
Balance (channel)
Balance (input trim)
Display, Info
Input Level Trim
Input Name
Input Phrase
Input Trigger
IR Out Control
Link Control
Mute, Output Trigger
RC-5 Control, Recall
RS-232 Control, Save
Theater Mode
Volume Display
14 Level Control Knob
or Up and Down Keys
Use the level control
knob or the up and
Select a configurable func-
tion to view a submenu of
the list of options that con-
figure the function. You can
configure some options as
well, if a second submenu
appears when you select
an option.
For more information on
menu configuration, review
the Owner’s Reference on
the Krell website at
Navigate to Downloads/
Current, then select the
Evolution 222 from the
product list. The publication
list for the Evolution 222
appears.
down keys on the re-
mote control to scroll
forward and backward
through the menu hier-
archy. Each menu list is
a continuous loop.
Navigation
Conventions
Navigating the preamplifier
menu is straightforward and
consistent throughout, using
4 functions and the menu
option BACK.
6
3
Enter Button or Key
Press this button or key
to select a function or a
configuration option,
and confirm a selection.
Front Panel Display
The display shows the
active function and con-
figurable options.
5
Menu Button or Key
To enter the menu,
press the menu button
Krell Evolution 222
3
Position the preamplifier where you intend to use it in your system.
Connecting the
Evolution 222
to Your System
1. Neatly arrange and organize wiring to and from the preamplifier and all compo-
nents. Separate the AC wires from any audio cables to prevent hum or other
unwanted noise from being introduced into the system.
Krell recommends using its
proprietary Krell CAST system
for unparalleled sonic per-
formance for connections
between the preamplifier and
other CAST-equipped compo-
nents. Krell CAST uses flexible
interconnecting cables that
can be drawn through tight
spaces and concealed.
The Evolution 222 also offers
balanced operation. This not
only minimizes sonic loss but
is also immune to induced
noise, especially for installa-
tions using long cables.
2. Connect the outputs of your source equipment to the appropriate CAST (18),
balanced (15), single-ended (16), or tape inputs (17) on the Evolution 222.
3. Connect the main outputs (20) on the Evolution 222 to your amplifier’s inputs.
4. Connect the supplied AC power cord to the IEC power cord receptacle (26)
of the preamplifier.
5. Plug the other end of the AC power cord into AC power. The display (3) scrolls
through EVOLUTION 222 SOFTWARE VERSION, and the stand-by/power LED (7) illumi-
nates red, indicating that the Evolution 222 is in stand-by mode. When the
scrolling stops, the Evolution 222 is ready to be powered on.
Note
Use only the power cord provided with the Evolution 222 to make the connection to AC
power. Operation with a power cord other than the one supplied by Krell can induce noise,
limit current, or otherwise impair the ability of the preamplifier to perform optimally.
After the Evolution 222 is connected to your system and to AC power, and the front
panel display has stopped scrolling, begin operation:
Operating the
Evolution 222
1. Press the power button (1) on the front panel, or the remote control power key.
The standby/power LED turns blue. The display shows the factory default input:
S-1, and level: -inf. The Evolution 222 is now in the operational mode.
2. With the preamplifier output muted, or the volume fully attenuated, select a
source manually using the front panel input select buttons (8, 9, or 10) or the
remote input select keys. Start playing the source. Use the level control knob
(14) or the remote level keys to set the volume to a comfortable level.
3. To return the preamplifier to the stand-by mode, press the power button (1) or
remote power key. (We recommend leaving the Evolution 222 in the stand-by
mode when it is not playing music.)
The balance function allows adjustment of the left and right balance. The options
are: CENTER, L .5-5 dB <, R .5-5 dB >.
Channel Balance
Adjustment
1. Press the preamplifier menu button (5), then use the level control knob, or the
remote control up and down keys to select: BALANCE.
2. Press the enter button (6) or remote enter key. The display shows the default
mode: CENTER.
3. Use the level control knob, or the up and down keys, to select the desired bal-
ance option from 0 to +5 dB in .5 dB increments, left or right.
4. Press the enter button or key to confirm the selection. The display reads:
BALANCE.
5. Press the menu button to exit the menu.
Evolution 222 Preamplifier
MODEL
SERIAL NUMBER
P/N 309323
v 07.0
4
Krell Evolution 222
Krell Industries, Inc., 45 Connair Road,Orange, CT 06477-3650 USA
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