diff --git a/libsndio/sioctl_open.3 b/libsndio/sioctl_open.3
index 5e733c1..2909b70 100644
--- a/libsndio/sioctl_open.3
+++ b/libsndio/sioctl_open.3
@@ -127,6 +127,7 @@ struct sioctl_desc {
 #define SIOCTL_SW		3	/* on/off switch (0 or 1) */
 #define SIOCTL_VEC		4	/* number, element of vector */
 #define SIOCTL_LIST		5	/* switch, element of a list */
+#define SIOCTL_SEL		6	/* element of a selector */
 	unsigned int type;		/* one of above */
 	char func[SIOCTL_NAMEMAX];	/* function name, ex. "level" */
 	char group[SIOCTL_NAMEMAX];	/* group this control belongs to */
@@ -167,6 +168,10 @@ from the line input to the speaker.
 An element of an array of on/off switches.
 For instance the line-in position of the
 speaker source selector.
+.It SIOCTL_SEL
+Same as
+.Va SIOCTL_LIST
+but exactly one element is selected at a time.
 .El
 .Pp
 The
@@ -182,9 +187,10 @@ attributes indicate the names of the controlled nodes, typically
 channels of audio streams.
 .Va node1
 is meaningful for
-.Va SIOCTL_VEC
+.Va SIOCTL_VEC ,
+.Va SIOCTL_LIST ,
 and
-.Va SIOCTL_LIST
+.Va SIOCTL_SEL
 only.
 .Pp
 Names in the
diff --git a/libsndio/sndio.h b/libsndio/sndio.h
index 292227c..19ad612 100644
--- a/libsndio/sndio.h
+++ b/libsndio/sndio.h
@@ -108,6 +108,7 @@ struct sioctl_desc {
 #define SIOCTL_SW		3	/* on/off switch (0 or 1) */
 #define SIOCTL_VEC		4	/* number, element of vector */
 #define SIOCTL_LIST		5	/* switch, element of a list */
+#define SIOCTL_SEL		6	/* element of a selector */
 	unsigned int type;		/* one of above */
 	char func[SIOCTL_NAMEMAX];	/* function name, ex. "level" */
 	char group[SIOCTL_NAMEMAX];	/* group this control belongs to */
diff --git a/sndioctl/sndioctl.c b/sndioctl/sndioctl.c
index 56d7211..37b61ea 100644
--- a/sndioctl/sndioctl.c
+++ b/sndioctl/sndioctl.c
@@ -107,7 +107,8 @@ cmpdesc(struct sioctl_desc *d1, struct sioctl_desc *d2)
 	if (res != 0)
 		return res;
 	res = d1->node0.unit - d2->node0.unit;
-	if (d1->type == SIOCTL_VEC ||
+	if (d1->type == SIOCTL_SEL ||
+	    d1->type == SIOCTL_VEC ||
 	    d1->type == SIOCTL_LIST) {
 		if (res != 0)
 			return res;
@@ -297,6 +298,7 @@ ismono(struct info *g)
 				return 0;
 		}
 		break;
+	case SIOCTL_SEL:
 	case SIOCTL_VEC:
 	case SIOCTL_LIST:
 		for (p2 = g; p2 != NULL; p2 = nextpar(p2)) {
@@ -345,6 +347,7 @@ print_desc(struct info *p, int mono)
 	case SIOCTL_SW:
 		printf("*");
 		break;
+	case SIOCTL_SEL:
 	case SIOCTL_VEC:
 	case SIOCTL_LIST:
 		more = 0;
@@ -358,7 +361,8 @@ print_desc(struct info *p, int mono)
 			if (more)
 				printf(",");
 			print_node(&e->desc.node1, mono);
-			printf(":*");
+			if (p->desc.type != SIOCTL_SEL)
+				printf(":*");
 			more = 1;
 		}
 	}
@@ -394,6 +398,7 @@ print_ent(struct info *e, char *comment)
 	case SIOCTL_NONE:
 		printf("<removed>\n");
 		break;
+	case SIOCTL_SEL:
 	case SIOCTL_VEC:
 	case SIOCTL_LIST:
 		print_node(&e->desc.node1, 0);
@@ -422,6 +427,7 @@ print_val(struct info *p, int mono)
 	case SIOCTL_SW:
 		print_num(p);
 		break;
+	case SIOCTL_SEL:
 	case SIOCTL_VEC:
 	case SIOCTL_LIST:
 		more = 0;
@@ -621,6 +627,9 @@ dump(void)
 		case SIOCTL_SW:
 			printf("0..%d (%u)", i->desc.maxval, i->curval);
 			break;
+		case SIOCTL_SEL:
+			print_node(&i->desc.node1, 0);
+			break;
 		case SIOCTL_VEC:
 		case SIOCTL_LIST:
 			print_node(&i->desc.node1, 0);
@@ -700,6 +709,7 @@ cmd(char *line)
 			npar++;
 		}
 		break;
+	case SIOCTL_SEL:
 	case SIOCTL_VEC:
 	case SIOCTL_LIST:
 		for (i = g; i != NULL; i = nextpar(i)) {
@@ -889,17 +899,36 @@ ondesc(void *arg, struct sioctl_desc *d, int curval)
 void
 onctl(void *arg, unsigned addr, unsigned val)
 {
-	struct info *i;
+	struct info *i, *j;
 
-	for (i = infolist; i != NULL; i = i->next) {
-		if (i->ctladdr != addr)
-			continue;
-		if (i->curval != val) {
-			i->curval = val;
-			if (m_flag)
-				print_ent(i, "changed");
-		}
+	i = infolist;
+	for (;;) {
+		if (i == NULL)
+			return;
+		if (i->ctladdr == addr)
+			break;
+		i = i->next;
 	}
+
+	if (i->curval == val) {
+		print_ent(i, "eq");
+		return;
+	}
+
+	if (i->desc.type == SIOCTL_SEL) {
+		for (j = infolist; j != NULL; j = j->next) {
+			if (strcmp(i->desc.group, j->desc.group) != 0 ||
+			    strcmp(i->desc.node0.name, j->desc.node0.name) != 0 ||
+			    strcmp(i->desc.func, j->desc.func) != 0 ||
+			    i->desc.node0.unit != j->desc.node0.unit)
+				continue;
+			j->curval = (i->ctladdr == j->ctladdr);
+		}
+	} else
+		i->curval = val;
+
+	if (m_flag)
+		print_ent(i, "changed");
 }
 
 int
diff --git a/sndiod/dev.c b/sndiod/dev.c
index f46723d..3c4b8d3 100644
--- a/sndiod/dev.c
+++ b/sndiod/dev.c
@@ -2297,6 +2297,7 @@ ctl_log(struct ctl *c)
 		break;
 	case CTL_VEC:
 	case CTL_LIST:
+	case CTL_SEL:
 		ctl_node_log(&c->node1);
 		log_puts(":");
 		log_putu(c->curval);
@@ -2321,7 +2322,7 @@ dev_addctl(struct dev *d, char *gstr, int type, int addr,
 	strlcpy(c->group, gstr, CTL_NAMEMAX);
 	strlcpy(c->node0.name, str0, CTL_NAMEMAX);
 	c->node0.unit = unit0;
-	if (c->type == CTL_VEC || c->type == CTL_LIST) {
+	if (c->type == CTL_VEC || c->type == CTL_LIST || c->type == CTL_SEL) {
 		strlcpy(c->node1.name, str1, CTL_NAMEMAX);
 		c->node1.unit = unit1;
 	} else
diff --git a/sndiod/dev.h b/sndiod/dev.h
index fb4dfbc..cbca055 100644
--- a/sndiod/dev.h
+++ b/sndiod/dev.h
@@ -126,6 +126,7 @@ struct ctl {
 #define CTL_SW		3		/* on/off switch, only bit 7 counts */
 #define CTL_VEC		4		/* number, element of vector */
 #define CTL_LIST	5		/* switch, element of a list */
+#define CTL_SEL		6		/* element of a selector */
 	unsigned int type;		/* one of above */
 	unsigned int addr;		/* control address */
 #define CTL_NAMEMAX	16		/* max name lenght */