diff --git a/drmr.c b/drmr.c
index 1306032..296cd77 100644
--- a/drmr.c
+++ b/drmr.c
@@ -175,6 +175,8 @@ connect_port(LV2_Handle instance,
 
 static void activate(LV2_Handle instance) { }
 
+// taken from lv2 example amp plugin
+#define DB_CO(g) ((g) > -90.0f ? powf(10.0f, (g) * 0.05f) : 0.0f)
 
 static void run(LV2_Handle instance, uint32_t n_samples) {
   int i,kitInt;
@@ -185,7 +187,7 @@ static void run(LV2_Handle instance, uint32_t n_samples) {
     pthread_cond_signal(&drmr->load_cond);
 
   LV2_Event_Iterator eit;
-  if (lv2_event_begin(&eit,drmr->midi_port)) { // if we have any events
+  if (drmr->midi_port && lv2_event_begin(&eit,drmr->midi_port)) { // if we have any events
     LV2_Event *cur_ev;
     uint8_t* data;
     while (lv2_event_is_valid(&eit)) {
@@ -229,9 +231,9 @@ static void run(LV2_Handle instance, uint32_t n_samples) {
     if (cs->active) {
       float gain;
       if (i < 16)
-	gain = *(drmr->gains[i]);
+	gain = DB_CO(*(drmr->gains[i]));
       else
-	gain = 1.0f;
+	gain = DB_CO(0.0f);
       if (cs->info.channels == 1) { // play mono sample
 	lim = (n_samples < (cs->limit - cs->offset)?n_samples:(cs->limit-cs->offset));
 	for(pos = 0;pos < lim;pos++) {
@@ -265,7 +267,7 @@ static void cleanup(LV2_Handle instance) {
   free(instance);
 }
 
-const void* extension_data(const char* uri) {
+static const void* extension_data(const char* uri) {
   return NULL;
 }
 
diff --git a/drmr.ttl b/drmr.ttl
index 0b90e34..e38dded 100644
--- a/drmr.ttl
+++ b/drmr.ttl
@@ -52,9 +52,13 @@
     lv2:index 4;
     lv2:symbol "gain_one";
     lv2:name "Sample One Gain";
-    lv2:minimum 0.0;
-    lv2:maximum 1.0;
-    lv2:default 1.0;
+    lv2:minimum -90.0;
+    lv2:maximum 6.0;
+    lv2:default 0.0;
+    lv2:scalePoint [
+      rdfs:label "-inf" ;
+      rdf:value -90.0
+    ]
   ],
 
   [
@@ -62,9 +66,13 @@
     lv2:index 5;
     lv2:symbol "gain_two";
     lv2:name "Sample Two Gain";
-    lv2:minimum 0.0;
-    lv2:maximum 1.0;
-    lv2:default 1.0;
+    lv2:minimum -90.0;
+    lv2:maximum 6.0;
+    lv2:default 0.0;
+    lv2:scalePoint [
+      rdfs:label "-inf" ;
+      rdf:value -90.0
+    ]
   ],
 
   [
@@ -72,9 +80,13 @@
     lv2:index 6;
     lv2:symbol "gain_three";
     lv2:name "Sample Three Gain";
-    lv2:minimum 0.0;
-    lv2:maximum 1.0;
-    lv2:default 1.0;
+    lv2:minimum -90.0;
+    lv2:maximum 6.0;
+    lv2:default 0.0;
+    lv2:scalePoint [
+      rdfs:label "-inf" ;
+      rdf:value -90.0
+    ]
   ],
 
   [
@@ -82,9 +94,13 @@
     lv2:index 7;
     lv2:symbol "gain_four";
     lv2:name "Sample Four Gain";
-    lv2:minimum 0.0;
-    lv2:maximum 1.0;
-    lv2:default 1.0;
+    lv2:minimum -90.0;
+    lv2:maximum 6.0;
+    lv2:default 0.0;
+    lv2:scalePoint [
+      rdfs:label "-inf" ;
+      rdf:value -90.0
+    ]
   ],
 
   [
@@ -92,19 +108,27 @@
     lv2:index 8;
     lv2:symbol "gain_five";
     lv2:name "Sample Five Gain";
-    lv2:minimum 0.0;
-    lv2:maximum 1.0;
-    lv2:default 1.0;
+    lv2:minimum -90.0;
+    lv2:maximum 6.0;
+    lv2:default 0.0;
+    lv2:scalePoint [
+      rdfs:label "-inf" ;
+      rdf:value -90.0
+    ]
   ],
 
   [
     a lv2:ControlPort, lv2:InputPort;
     lv2:index 9;
-    lv2:symbol "gain_siz";
-    lv2:name "Sample Siz Gain";
-    lv2:minimum 0.0;
-    lv2:maximum 1.0;
-    lv2:default 1.0;
+    lv2:symbol "gain_six";
+    lv2:name "Sample Six Gain";
+    lv2:minimum -90.0;
+    lv2:maximum 6.0;
+    lv2:default 0.0;
+    lv2:scalePoint [
+      rdfs:label "-inf" ;
+      rdf:value -90.0
+    ]
   ],
 
   [
@@ -112,9 +136,13 @@
     lv2:index 10;
     lv2:symbol "gain_seven";
     lv2:name "Sample Seven Gain";
-    lv2:minimum 0.0;
-    lv2:maximum 1.0;
-    lv2:default 1.0;
+    lv2:minimum -90.0;
+    lv2:maximum 6.0;
+    lv2:default 0.0;
+    lv2:scalePoint [
+      rdfs:label "-inf" ;
+      rdf:value -90.0
+    ]
   ],
 
   [
@@ -122,9 +150,13 @@
     lv2:index 11;
     lv2:symbol "gain_eight";
     lv2:name "Sample Eight Gain";
-    lv2:minimum 0.0;
-    lv2:maximum 1.0;
-    lv2:default 1.0;
+    lv2:minimum -90.0;
+    lv2:maximum 6.0;
+    lv2:default 0.0;
+    lv2:scalePoint [
+      rdfs:label "-inf" ;
+      rdf:value -90.0
+    ]
   ],
 
   [
@@ -132,9 +164,13 @@
     lv2:index 12;
     lv2:symbol "gain_nine";
     lv2:name "Sample Nine Gain";
-    lv2:minimum 0.0;
-    lv2:maximum 1.0;
-    lv2:default 1.0;
+    lv2:minimum -90.0;
+    lv2:maximum 6.0;
+    lv2:default 0.0;
+    lv2:scalePoint [
+      rdfs:label "-inf" ;
+      rdf:value -90.0
+    ]
   ],
 
   [
@@ -142,9 +178,13 @@
     lv2:index 13;
     lv2:symbol "gain_ten";
     lv2:name "Sample Ten Gain";
-    lv2:minimum 0.0;
-    lv2:maximum 1.0;
-    lv2:default 1.0;
+    lv2:minimum -90.0;
+    lv2:maximum 6.0;
+    lv2:default 0.0;
+    lv2:scalePoint [
+      rdfs:label "-inf" ;
+      rdf:value -90.0
+    ]
   ],
 
   [
@@ -152,9 +192,13 @@
     lv2:index 14;
     lv2:symbol "gain_eleven";
     lv2:name "Sample Eleven Gain";
-    lv2:minimum 0.0;
-    lv2:maximum 1.0;
-    lv2:default 1.0;
+    lv2:minimum -90.0;
+    lv2:maximum 6.0;
+    lv2:default 0.0;
+    lv2:scalePoint [
+      rdfs:label "-inf" ;
+      rdf:value -90.0
+    ] 
   ],
 
   [
@@ -162,9 +206,13 @@
     lv2:index 15;
     lv2:symbol "gain_twelve";
     lv2:name "Sample Twelve Gain";
-    lv2:minimum 0.0;
-    lv2:maximum 1.0;
-    lv2:default 1.0;
+    lv2:minimum -90.0;
+    lv2:maximum 6.0;
+    lv2:default 0.0;
+    lv2:scalePoint [
+      rdfs:label "-inf" ;
+      rdf:value -90.0
+    ]
   ],
 
   [
@@ -172,9 +220,13 @@
     lv2:index 16;
     lv2:symbol "gain_thirteen";
     lv2:name "Sample Thirteen Gain";
-    lv2:minimum 0.0;
-    lv2:maximum 1.0;
-    lv2:default 1.0;
+    lv2:minimum -90.0;
+    lv2:maximum 6.0;
+    lv2:default 0.0;
+    lv2:scalePoint [
+      rdfs:label "-inf" ;
+      rdf:value -90.0
+    ]
   ],
 
   [
@@ -182,9 +234,13 @@
     lv2:index 17;
     lv2:symbol "gain_fourteen";
     lv2:name "Sample Fourteen Gain";
-    lv2:minimum 0.0;
-    lv2:maximum 1.0;
-    lv2:default 1.0;
+    lv2:minimum -90.0;
+    lv2:maximum 6.0;
+    lv2:default 0.0;
+    lv2:scalePoint [
+      rdfs:label "-inf" ;
+      rdf:value -90.0
+    ]
   ],
 
   [
@@ -192,9 +248,13 @@
     lv2:index 18;
     lv2:symbol "gain_fifteen";
     lv2:name "Sample Fifteen Gain";
-    lv2:minimum 0.0;
-    lv2:maximum 1.0;
-    lv2:default 1.0;
+    lv2:minimum -90.0;
+    lv2:maximum 6.0;
+    lv2:default 0.0;
+    lv2:scalePoint [
+      rdfs:label "-inf" ;
+      rdf:value -90.0
+    ]
   ],
 
   [