diff --git a/sndlock.cpp b/sndlock.cpp
index 4c1ccf0..f5992f2 100644
--- a/sndlock.cpp
+++ b/sndlock.cpp
@@ -201,6 +201,9 @@ int main(int argc, char* argv[])
     std::atexit(SetShutdown);
 
     bool exit = false;
+    float plot_scale[SND_PCHAN];
+    for(int i=0;i<SND_PCHAN;i++)
+        plot_scale[i] = 0.005f;
     while(!exit && !glfwWindowShouldClose(window)) {
         glfwPollEvents();
         glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
@@ -217,8 +220,9 @@ int main(int argc, char* argv[])
 
         if(ImGui::CollapsingHeader("Modulation", ImGuiTreeNodeFlags_DefaultOpen)) {
             for(int i=0;i<SND_PCHAN;i++) {
+                ImGui::Text("Channel %d", i);
                 char str[64];
-                sprintf(str, "Frequency ch%d", i);
+                sprintf(str, "frequency##%d", i);
                 float frequency_l = frequency[i];
                 ImGui::SliderFloat(str, &frequency_l, 50.0f, 8000.0f);
                 frequency[i] = frequency_l;
@@ -227,15 +231,19 @@ int main(int argc, char* argv[])
         if(ImGui::CollapsingHeader("Demodulation", ImGuiTreeNodeFlags_DefaultOpen)) {
             for(int i=0;i<SND_PCHAN;i++) {
                 char str[64];
-                sprintf(str, "LPF bandwidth ch%d", i);
+
+                ImGui::Text("Channel %d", i);
+                sprintf(str, "LPF BW##%d", i);
                 float lpf_bandwidth_l = lpf_bandwidth[i];
                 ImGui::SliderFloat(str, &lpf_bandwidth_l, 0.5f, 200.0f);
                 lpf_bandwidth[i] = lpf_bandwidth_l;
 
-                sprintf(str, "Output ch%d", i);
+                sprintf(str, "plot scale##%d", i);
+                ImGui::SliderFloat(str, &plot_scale[i], 0.001f, 0.01f);
+                sprintf(str, "output##%d", i);
                 {
                     std::lock_guard<std::mutex> guard(lpf_hist_mutex);
-                    ImGui::PlotLines(str, lpf_hist[i], 512, 0, 0, -0.0f, 0.01f, ImVec2(0, 200.0f));
+                    ImGui::PlotLines(str, lpf_hist[i], 512, 0, 0, -0.0f, plot_scale[i], ImVec2(0.0f, 200.0f));
                 }
             }
         }