diff --git a/libs/surfaces/mackie/device_info.cc b/libs/surfaces/mackie/device_info.cc
old mode 100644
new mode 100755
index 979be6b76b..e5a54fdab5
--- a/libs/surfaces/mackie/device_info.cc
+++ b/libs/surfaces/mackie/device_info.cc
@@ -56,6 +56,7 @@ DeviceInfo::DeviceInfo()
 	, _uses_logic_control_buttons (false)
 	, _uses_ipmidi (false)
 	, _no_handshake (false)
+	, _is_qcon(false)
 	, _has_meters (true)
 	, _has_separate_meters (false)
 	, _device_type (MCU)
@@ -320,6 +321,12 @@ DeviceInfo::set_state (const XMLNode& node, int /* version */)
 		_has_meters = true;
 	}
 
+	if ((child = node.child ("IsQCon")) != 0) {
+		child->get_property ("value", _is_qcon);
+	} else {
+		_is_qcon = false;
+	}
+
 	if ((child = node.child ("HasSeparateMeters")) != 0) {
 		child->get_property ("value", _has_separate_meters);
 	} else {
@@ -456,6 +463,12 @@ DeviceInfo::no_handshake () const
 	return _no_handshake;
 }
 
+bool
+DeviceInfo::is_qcon () const
+{
+	return _is_qcon;
+}
+
 bool
 DeviceInfo::has_touch_sense_faders () const
 {
diff --git a/libs/surfaces/mackie/device_info.h b/libs/surfaces/mackie/device_info.h
old mode 100644
new mode 100755
index 2aaa710ec6..c709bc9725
--- a/libs/surfaces/mackie/device_info.h
+++ b/libs/surfaces/mackie/device_info.h
@@ -80,6 +80,7 @@ class DeviceInfo
 	bool has_touch_sense_faders() const;
 	bool uses_ipmidi() const;
 	bool no_handshake() const;
+	bool is_qcon() const;
 	bool has_meters() const;
 	bool has_separate_meters() const;
 	const std::string& name() const;
@@ -109,6 +110,7 @@ class DeviceInfo
 	bool     _uses_logic_control_buttons;
 	bool     _uses_ipmidi;
 	bool     _no_handshake;
+	bool     _is_qcon;
 	bool     _has_meters;
 	bool     _has_separate_meters;
 	DeviceType _device_type;
diff --git a/libs/surfaces/mackie/mackie_control_protocol.cc b/libs/surfaces/mackie/mackie_control_protocol.cc
old mode 100644
new mode 100755
diff --git a/libs/surfaces/mackie/mackie_control_protocol.h b/libs/surfaces/mackie/mackie_control_protocol.h
old mode 100644
new mode 100755
index 68e918d0e9..20786d75a0
--- a/libs/surfaces/mackie/mackie_control_protocol.h
+++ b/libs/surfaces/mackie/mackie_control_protocol.h
@@ -364,7 +364,7 @@ class MackieControlProtocol
         void initialize ();
         int set_device_info (const std::string& device_name);
 	void update_configuration_state ();
-
+	
 	/* MIDI port connection management */
 
 	PBD::ScopedConnection port_connection;
diff --git a/libs/surfaces/mackie/surface.cc b/libs/surfaces/mackie/surface.cc
old mode 100644
new mode 100755
index 079d057d43..7ed0c5c26a
--- a/libs/surfaces/mackie/surface.cc
+++ b/libs/surfaces/mackie/surface.cc
@@ -84,6 +84,15 @@ static MidiByteArray mackie_sysex_hdr  (5, MIDI::sysex, 0x0, 0x0, 0x66, 0x14);
 // the device type
 static MidiByteArray mackie_sysex_hdr_xt  (5, MIDI::sysex, 0x0, 0x0, 0x66, 0x15);
 
+//QCON
+// The MCU sysex header for QCon Control surface
+static MidiByteArray mackie_sysex_hdr_qcon  (5, MIDI::sysex, 0x0, 0x0, 0x66, 0x14); 
+
+// The MCU sysex header for QCon Control - extender 
+// The extender differs from Mackie by 4th bit - it's same like for main control surface (for display)
+static MidiByteArray mackie_sysex_hdr_xt_qcon  (5, MIDI::sysex, 0x0, 0x0, 0x66, 0x14);
+
+
 static MidiByteArray empty_midi_byte_array;
 
 Surface::Surface (MackieControlProtocol& mcp, const std::string& device_name, uint32_t number, surface_type_t stype)
@@ -287,8 +296,18 @@ const MidiByteArray&
 Surface::sysex_hdr() const
 {
 	switch  (_stype) {
-	case mcu: return mackie_sysex_hdr;
-	case ext: return mackie_sysex_hdr_xt;
+	case mcu: 
+		if (_mcp.device_info().is_qcon()) {
+			return mackie_sysex_hdr_qcon;
+		} else {
+			return mackie_sysex_hdr;
+		}
+	case ext:
+		if(_mcp.device_info().is_qcon()) {		
+			return mackie_sysex_hdr_xt_qcon;
+		} else {
+			return mackie_sysex_hdr_xt;
+		}
 	}
 	cout << "SurfacePort::sysex_hdr _port_type not known" << endl;
 	return mackie_sysex_hdr;
@@ -682,9 +701,18 @@ Surface::handle_midi_sysex (MIDI::Parser &, MIDI::byte * raw_bytes, size_t count
 	 */
 
 	if (_stype == mcu) {
-		mackie_sysex_hdr[4] = bytes[4];
+		if (_mcp.device_info().is_qcon()) {
+			mackie_sysex_hdr_qcon[4] = bytes[4];
+		} else {
+			mackie_sysex_hdr[4] = bytes[4]; 
+		}
+		
 	} else {
-		mackie_sysex_hdr_xt[4] = bytes[4];
+		if (_mcp.device_info().is_qcon()) {
+			mackie_sysex_hdr_xt_qcon[4] = bytes[4];
+		} else {
+			mackie_sysex_hdr_xt[4] = bytes[4];
+		}
 	}
 
 	switch (bytes[5]) {