Mint condition .  No smoking, no pet, original owner, slightly less than a year old with original box, manual, remote control and accs.  Plastic is still intact on front display.
This Classe integrated 2200i is one of the finest sounding unit I've owned.  It will dive just about any speakers.  Many useful features (optional phono stage), streaming device (DSD, 24/192kHz) HDMI in/out, Digital coax, XLR, sub woofer out. etc..  drives Maggies 1.7s to their optimum sound.  Sound is among the best and finest available out there.
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Manufacture descriptions:

Sigma 2200i INTEGRATED AMPLIFIER

The Sigma 2200i Stereo Integrated Amplifier is designed for music lovers and
AV enthusiasts who want high performance control and amplification from a
diverse range audio sources. Its connectivity and processing power accommodate
the ever increasing array of music and AV sources, allowing them to be accessed
and enjoyed without compromise.

Specifications:

All tests un-weighted and 20Hz – 20kHz measurement bandwidth used.

Frequency response

10Hz – 20kHz, -1dB into 4Ω

Output power

2x200W rms into 8Ω 2x400W rms into 4Ω

Harmonic Distortion

<0.018% @ 1kHz Both channels driven to 1/8th power into 4Ω

Peak Output Voltage

113V peak to peak, 40V rms no load

Input Impedance

100kΩ Balanced / 50kΩ SE

Input level at clipping

2 Vrms SE / 4 Vrms Balanced

Signal to Noise Ratio

97 dB

Standby power consumption

< 0.5W

Rated power

consumption

185W

Mains voltage

90V - 264V, 50/60Hz

Overall Dimensions

Width: 17.00" (433mm)

Depth (excluding connectors): 14.57" (370mm)

Height: 5.50" (140mm)

Net weight

26.7 lbs (12.11 kg)

Shipping weight

34.3 lbs (15.57 kg)

Executive Overview

The
Canadian manufacturer Classe, of The B&W Group along with Rotel,
debuted
its Sigma 2200i Integrated Amplifier at the 2016 International Consumer
Electronic
Show (CES) in Las Vegas earlier this year. 
The 2200i made its debut this month as their flagship product in the
integrated amplifier category.  This is yet another addition to Classe’s
truly audiophile line of products ranging from 2/5-channel amplifiers,
pre-amps/processors, and integrated amplifiers. 
Like all their products, the Sigma 2200i is designed for consumers that
desire high quality control and amplification from whatever source they
choose.  As an integrated amp there is no
need to purchase a separate pre-amp. Hence the name “integrated amp”,
where both
units are combined. 

The
front of the unit consists of a power button on the top left. On the middle
left of the cabinet is the IR window, the ¼” headphone jack (which naturally
mutes the main audio output once plugged in), and a USB host connector.  In the center of the unit is the LCD
touchscreen display with a GUI (Graphical User Interface), which is recessed into
the face of the amp at a slight angle. 
This display allows the unit to provide a considerable amount of
controls without the clutter of buttons and knobs.  To the immediate left and right of the display
is the Menu button and Mute button respectively.  The only knob, or something of that nature
anyway, is the large volume control knob. 
It seems rather flat, flatter even than the volume control knob on some
budget receivers such as the current budget models available from Harman
Kardon.  According to Classe, this multi-function knob
is also used to adjust the balance, PEQ parameters, Q control, tone, and input
selection.  The volume range is from -93.0
db to +14 db in 0.5 db increments. 
Another physical feature that this unit has is the ability to be mounted
to an entertainment equipment rack. 
Simply unscrew the two side panels, rotate them, and flip them so the
left is on the right and vice versa. 
Classe recommends allowing two rack spaces above the unit to allow for
proper ventilation.

Cool Running

A
rather unique feature that Classe includes in this amplifier is an air
intake.  Below the front LCD touchscreen
display is a wide vent with a metal mesh grill.  Behind the grill there is a filter that can be
accessed and removed to the right side of the front panel by removing two
screws.  The filter is renewable and can
be cleaned.  This vent is actually an air
intake vent for an internal fan that cools the amp during operation similar to
a computer CPU.  This air is then sent
out of the back of the unit by means of a small internal fan that rotates at a
low speed.  Classe states that all their
products typically have a “warm-up” period but their products are designed that
when they reach the “warm-up” point, they will be up and running as soon as
they are switched on.  This type of
ventilation system is very common among Classe’s other units in their product
list as we've seen in our CT-2300 two-channel amplifier review. 
If the 2200i utilizes the same ventilation
system though it is not specified.  For
example, in their Sigma SSP, the heat management system is controlled by
what
they refer to as the ICTunnel (pronounced icy tunnel).  This ICTunnel
regulates the amp temperature
to allow the amp to operate at optimal performance and reliability. It's
quite an interesting and unique piece of engineering innovation on
Classe's part and we are glad to see it trickle into this product too.

Inputs Galore

In
the rear of the Sigma 2200i there are 4 HDMI inputs and 1 HDMI output for
connection to sources with the associated outputs.  These inputs feature up to 4K pass through
capability at 24/50/60 fps, Audio Return Channel, Deep Color, and x.v.Color.  The rear panel also consists of several
analog ins/outs (1pair of balanced XLR and 2 pairs of RCA) and one can even be
used for phono connection for a good ol’ record player such as the current
Fluance RT80 or RT81.  Classe states that in order
to take advantage of the phono connection a Classe dealer must be contacted for
installation details.  Personally I
believe the phono connection should already be available without having to install
an optional phono stage, especially at this price.  An Ethernet
input is also available which allows streaming audio through Apple’s AirPlay
and the Digital Living Network Alliance (DLNA). 
One can have full IP control via the Classe mobile application, which is
available for free on the Apple App store or Google play store for iOS or
Android mobile devices.  There are also
digital inputs and outputs for optical TOSlink connections, coaxial connections,
and a USB host connection to connect a PC or Mac to the amp.  The optical connection only has a maximum
data stream of 96kHz/24bit.  Meanwhile
the USB host and coaxial connections can utilize a maximum data stream of 192kHz/24bit.   There
is also a nice quality pair of 5-way binding posts.  Classe recommends any other connection but
twisted bare wire to avoid fraying and oxidizing.  A nice addition that the Sigma 2200i has is a
balanced XLR and single-ended RCA output for a subwoofer.

 

This
powerful amplifier boasts 200w per channel at 8 ohms and 400w at 4 ohms with
0.018% THD.  You can rest assured that the
sound quality is exceptional and your system can really crank the sound especially
if you get some audiophile speakers to go with this amp like some Salk Soundscapes
or B&W 800 series just to name a few. 
According to Classe, the 2200i features the same amplifier section of
its own Sigma AMP2 and CA-D200.  With
that said, the 2200i’s class D amp eliminates the necessity for DACs and ADCs
which results in shortening of the signal path from the preamp DSP to that of
the amplifier section DSP.  This allows
the input signal to remain digital until the amps’ output filters.  More of this is explained on Classe’s
website.