diff --git a/sndlock.cpp b/sndlock.cpp
index 66f363f..dbd5fb1 100644
--- a/sndlock.cpp
+++ b/sndlock.cpp
@@ -257,6 +257,8 @@ static std::atomic<float> laser_temp[SND_PCHAN];
 static std::atomic<float> init_current_cooling[SND_PCHAN];
 static std::atomic<float> init_current_heating[SND_PCHAN];
 static std::atomic<float> init_temp[SND_PCHAN];
+static std::atomic<float> leadin_current[SND_PCHAN];
+static std::atomic<float> leadin_temp[SND_PCHAN];
 
 static void servo_thread(int channel)
 {
@@ -321,6 +323,8 @@ int main(int argc, char* argv[])
         init_current_cooling[i] = 100.0f;
         init_current_heating[i] = 30.0f;
         init_temp[i] = 25.0f;
+        leadin_current[i] = 100.0f;
+        leadin_temp[i] = 24.0f;
     }
 
     static std::thread dsp_thread_h = std::thread(dsp_thread);
@@ -458,7 +462,7 @@ int main(int argc, char* argv[])
                 ImGui::Text("laser temperature: %.4f °C", (float)laser_temp[i]);
 
                 ImGui::AlignTextToFramePadding();
-                ImGui::Text("init:");
+                ImGui::Text("init:   ");
                 ImGui::PushItemWidth(ImGui::GetContentRegionAvail().x / 6.0f);
                 ImGui::SameLine();
                 sprintf(str, "cooling mA##%d", i);
@@ -476,6 +480,21 @@ int main(int argc, char* argv[])
                 ImGui::InputFloat(str, &init_temp_l, 1.0f, 500.0f, "%.4f");
                 init_temp[i] = init_temp_l;
                 ImGui::PopItemWidth();
+                
+                ImGui::AlignTextToFramePadding();
+                ImGui::Text("lead-in:");
+                ImGui::PushItemWidth(ImGui::GetContentRegionAvail().x / 6.0f);
+                ImGui::SameLine();
+                sprintf(str, "current mA##%d", i);
+                float leadin_current_l = leadin_current[i];
+                ImGui::InputFloat(str, &leadin_current_l, 1.0f, 500.0f, "%.3f");
+                leadin_current[i] = leadin_current_l;
+                ImGui::SameLine();
+                sprintf(str, "temp °C##leadin%d", i);
+                float leadin_temp_l = leadin_temp[i];
+                ImGui::InputFloat(str, &leadin_temp_l, 1.0f, 500.0f, "%.4f");
+                leadin_temp[i] = leadin_temp_l;
+                ImGui::PopItemWidth();
             }
         }