diff --git a/changevol.cc b/changevol.cc
index c09f8b8..98a4054 100644
--- a/changevol.cc
+++ b/changevol.cc
@@ -5,28 +5,50 @@
  *
  */
 
-#include "usermodfx.h"
+#include "unit_modfx.h"
 
+#define k_user_modfx_param_time 0
+#define k_user_modfx_param_depth 1
+
+static unit_runtime_desc_t s_runtime_desc;
+static int32_t s_params[10];
 static float s_depth;
 static uint8_t s_time;
 
-void MODFX_INIT(uint32_t platform, uint32_t api)
-{
+__unit_callback int8_t unit_init(const unit_runtime_desc_t * desc) {
+    if (!desc)
+      return k_unit_err_undef;
+
+    // Note: make sure the unit is being loaded to the correct platform/module target
+    if (desc->target != unit_header.target)
+      return k_unit_err_target;
+
+    // Note: check API compatibility with the one this unit was built against
+    if (!UNIT_API_IS_COMPAT(desc->api))
+      return k_unit_err_api_version;
+
+    // Check compatibility of samplerate with unit, for NTS-1 MKII should be 48000
+    if (desc->samplerate != 48000)
+      return k_unit_err_samplerate;
+
+    // Check compatibility of frame geometry
+    if (desc->input_channels != 2 || desc->output_channels != 2)  // should be stereo input/output
+      return k_unit_err_geometry;
+
+    // Cache the runtime descriptor for later use
+    s_runtime_desc = *desc;
+
     s_depth = 1.0f;
     s_time = 0.5f;
+
+    return k_unit_err_none;
 }
 
-void MODFX_PROCESS(const float *main_xn, float *main_yn,
-                   const float *sub_xn,  float *sub_yn,
-                   uint32_t frames)
-{
-    const float * mx = main_xn;
-    float * __restrict my = main_yn;
+__unit_callback void unit_render(const float * in, float * out, uint32_t frames) {
+    const float * mx = in;
+    float * __restrict my = out;
     const float * my_e = my + 2 * frames;
 
-    const float *sx = sub_xn;
-    float * __restrict sy = sub_yn;
-
     float on_off;
     if (s_time < 32) {
         on_off = 0;
@@ -41,16 +63,13 @@ void MODFX_PROCESS(const float *main_xn, float *main_yn,
     for (; my != my_e; ) {
         *(my++) = *(mx++) * s_depth * on_off;
         *(my++) = *(mx++) * s_depth * on_off;
-        *(sy++) = *(sx++) * s_depth * on_off;
-        *(sy++) = *(sx++) * s_depth * on_off;
     }
 }
 
 
-void MODFX_PARAM(uint8_t index, int32_t value)
-{
-    const float valf = q31_to_f32(value);
-    switch (index) {
+__unit_callback void unit_set_param_value(uint8_t id, int32_t value) {
+    const float valf = param_10bit_to_f32(value);
+    switch (id) {
     case k_user_modfx_param_time:
         s_time = clip01f(valf * 0.999) * 128;
         break;
@@ -60,5 +79,31 @@ void MODFX_PARAM(uint8_t index, int32_t value)
     default:
         break;
   }
+    s_params[id] = value;
+}
+
+__unit_callback void unit_teardown() {
+}
+
+__unit_callback void unit_reset() {
+}
+
+__unit_callback void unit_resume() {
+}
+
+__unit_callback void unit_suspend() {
+}
+
+__unit_callback int32_t unit_get_param_value(uint8_t id) {
+    return s_params[id];
+}
+
+__unit_callback const char * unit_get_param_str_value(uint8_t id, int32_t value) {
+    return nullptr;
 }
 
+__unit_callback void unit_set_tempo(uint32_t tempo) {
+}
+
+__unit_callback void unit_tempo_4ppqn_tick(uint32_t counter) {
+}
diff --git a/config.mk b/config.mk
index da6c0ea..da26904 100644
--- a/config.mk
+++ b/config.mk
@@ -2,7 +2,7 @@
 # Configuration for Makefile
 #
 
-PROJECT := dummy_modfx
+PROJECT := mastervol2
 PROJECT_TYPE := modfx
 
 ##############################################################################
@@ -13,7 +13,7 @@ PROJECT_TYPE := modfx
 UCSRC = header.c
 
 # C++ sources 
-UCXXSRC = unit.cc
+UCXXSRC = changevol.cc
 
 # List ASM source files here
 UASMSRC = 
diff --git a/header.c b/header.c
index 6dba6c5..0515752 100644
--- a/header.c
+++ b/header.c
@@ -43,14 +43,14 @@
 // ---- Unit header definition  --------------------------------------------------------------------
 
 const __unit_header unit_header_t unit_header = {
-    .header_size = sizeof(unit_header_t),                  // Size of this header. Leave as is.
-    .target = UNIT_TARGET_PLATFORM | k_unit_module_modfx,  // Target platform and module pair for this unit
-    .api = UNIT_API_VERSION,                               // API version for which unit was built. See runtime.h
-    .dev_id = 0x0,                                         // Developer ID. See https://github.com/korginc/logue-sdk/blob/master/developer_ids.md
-    .unit_id = 0x0U,                                       // ID for this unit. Scoped within the context of a given dev_id.
-    .version = 0x00010000U,                                // This unit's version: major.minor.patch (major<<16 minor<<8 patch).
-    .name = "dummy",                                       // Name for this unit, will be displayed on device
-    .num_params = 3,                                       // Number of valid parameter descriptors. (max. 10)
+    .header_size = sizeof(unit_header_t),
+    .target = UNIT_TARGET_PLATFORM | k_unit_module_modfx,
+    .api = UNIT_API_VERSION,
+    .dev_id = 0x42636877U,  // "Bchw"
+    .unit_id = 0x04030000,  // Product number(03),Unit type(03=ModFX),reserved
+    .version = 0x00010000U,
+    .name = "MasterV2",
+    .num_params = 2,
     
     .params = {
         // Format: min, max, center, default, type, frac. bits, frac. mode, <reserved>, name
@@ -59,13 +59,13 @@ const __unit_header unit_header_t unit_header = {
 
         // Fixed/direct UI parameters
         // A knob
-        {0, 1023, 0, 256, k_unit_param_type_none, 1, 0, 0, {"TIME"}},
+        {0, 1023, 0, 256, k_unit_param_type_none, 1, 0, 0, {"MODE"}},
 
         // B knob
-        {0, 1023, 0, 256, k_unit_param_type_none, 1, 0, 0, {"DPTH"}},
+        {0, 1023, 0, 256, k_unit_param_type_none, 1, 0, 0, {"VOL"}},
 
         // 8 Edit menu parameters
-        {0, 3, 0, 1, k_unit_param_type_strings, 0, 0, 0, {"PARAM3"}}, // Example of a strings type parameter
+        {0, 0, 0, 0, k_unit_param_type_none, 0, 0, 0, {""}},
         {0, 0, 0, 0, k_unit_param_type_none, 0, 0, 0, {""}},
         {0, 0, 0, 0, k_unit_param_type_none, 0, 0, 0, {""}},
         {0, 0, 0, 0, k_unit_param_type_none, 0, 0, 0, {""}},