diff --git a/sndiod/aparams.c b/sndiod/aparams.c
index 8a4f0cb..f8e5ccf 100644
--- a/sndiod/aparams.c
+++ b/sndiod/aparams.c
@@ -38,11 +38,6 @@ int aparams_ctltovol[128] = {
 	26008,	27029,	28090,	29193,	30339,	31530,	32768
 };
 
-/*
- * Fake parameters for byte-streams
- */
-struct aparams aparams_none = {1, 0, 0, 0, 0};
-
 /*
  * Generate a string corresponding to the encoding in par,
  * return the length of the resulting string.
@@ -192,28 +187,12 @@ aparams_log(struct aparams *par)
 }
 
 /*
- * Return true if both encodings are the same.
+ * Return true if encoding can be represented as adata_t
  */
 int
-aparams_eq(struct aparams *par1, struct aparams *par2)
+aparams_native(struct aparams *par)
 {
-	if (par1->bps != par2->bps ||
-	    par1->bits != par2->bits ||
-	    par1->sig != par2->sig)
-		return 0;
-	if ((par1->bits != 8 * par1->bps) && par1->msb != par2->msb)
-		return 0;
-	if (par1->bps > 1 && par1->le != par2->le)
-		return 0;
-	return 1;
-}
-
-void
-aparams_copy(struct aparams *dst, struct aparams *src)
-{
-	dst->sig = src->sig;
-	dst->le = src->le;
-	dst->msb = src->msb;
-	dst->bits = src->bits;
-	dst->bps = src->bps;
+	return par->bps == sizeof(adata_t) && par->bits == ADATA_BITS &&
+	    (par->bps > 1 || par->le == ADATA_LE) &&
+	    (par->bits < par->bps * 8 || !par->msb);
 }
diff --git a/sndiod/aparams.h b/sndiod/aparams.h
index afd5b17..78a46af 100644
--- a/sndiod/aparams.h
+++ b/sndiod/aparams.h
@@ -128,7 +128,6 @@ void aparams_init(struct aparams *);
 void aparams_log(struct aparams *);
 int aparams_strtoenc(struct aparams *, char *);
 int aparams_enctostr(struct aparams *, char *);
-int aparams_eq(struct aparams *, struct aparams *);
-void aparams_copy(struct aparams *, struct aparams *);
+int aparams_native(struct aparams *);
 
 #endif /* !defined(APARAMS_H) */
diff --git a/sndiod/dev.c b/sndiod/dev.c
index 7303626..2d412fa 100644
--- a/sndiod/dev.c
+++ b/sndiod/dev.c
@@ -1013,8 +1013,6 @@ dev_adjpar(struct dev *d, int mode,
 int
 dev_open(struct dev *d)
 {
-	struct aparams par;
-	
 	d->mode = d->reqmode;
 	d->round = d->reqround;
 	d->bufsz = d->reqbufsz;
@@ -1037,8 +1035,6 @@ dev_open(struct dev *d)
 		return 0;
 	}
 	if (d->mode & MODE_REC) {
-		aparams_init(&par);
-
 		/*
 		 * Create device <-> demuxer buffer
 		 */
@@ -1047,16 +1043,13 @@ dev_open(struct dev *d)
 		/*
 		 * Insert a converter, if needed.
 		 */
-		if (!aparams_eq(&d->par, &par)) {
+		if (!aparams_native(&d->par)) {
 			dec_init(&d->dec, &d->par, d->rchan);
 			d->decbuf = xmalloc(d->round * d->rchan * d->par.bps);
-			memrnd(d->decbuf, d->round * d->rchan * d->par.bps);
 		} else
 			d->decbuf = NULL;
 	}
 	if (d->mode & MODE_PLAY) {
-		aparams_init(&par);
-
 		/*
 		 * Create device <-> mixer buffer
 		 */
@@ -1067,10 +1060,9 @@ dev_open(struct dev *d)
 		/*
 		 * Append a converter, if needed.
 		 */
-		if (!aparams_eq(&par, &d->par)) {
+		if (!aparams_native(&d->par)) {
 			enc_init(&d->enc, &d->par, d->pchan);
 			d->encbuf = xmalloc(d->round * d->pchan * d->par.bps);
-			memrnd(d->encbuf, d->round * d->pchan * d->par.bps);
 		} else
 			d->encbuf = NULL;
 	}
@@ -1079,24 +1071,21 @@ dev_open(struct dev *d)
 		dev_log(d);
 		log_puts(": ");
 		log_putu(d->rate);
-		log_puts("Hz");
+		log_puts("Hz, ");
+		aparams_log(&d->par);
 		if (d->mode & MODE_PLAY) {
-			log_puts(", ");
-			log_puti(d->pchan);
-			log_puts(" play chans");
+			log_puts(", play 0:");
+			log_puti(d->pchan - 1);
 		}
 		if (d->mode & MODE_REC) {
-			log_puts(", ");
-			log_puti(d->rchan);
-			log_puts(" rec chans");
+			log_puts(", rec 0:");
+			log_puti(d->rchan - 1);
 		}
 		log_puts(", ");
-		aparams_log(&d->par);
-		log_puts(", ");
 		log_putu(d->bufsz / d->round);
-		log_puts("x");
+		log_puts(" blocks of ");
 		log_putu(d->round);
-		log_puts(" buffer\n");
+		log_puts(" frames\n");
 	}
 	return 1;
 }
@@ -1255,7 +1244,7 @@ dev_wakeup(struct dev *d)
 #endif
 		if (log_level >= 2) {
 			dev_log(d);
-			log_puts(" device started\n");
+			log_puts(": device started\n");
 		}
 		if (d->mode & MODE_PLAY) {
 			d->prime = d->bufsz;
@@ -1667,7 +1656,7 @@ slot_attach(struct slot *s)
 		    s->mix.slot_cmin, s->mix.slot_cmax,
 		    0, d->pchan - 1,
 		    s->mix.dev_cmin, s->mix.dev_cmax);
-		if (!aparams_eq(&s->par, &d->par)) {
+		if (!aparams_native(&s->par)) {
 			dec_init(&s->mix.dec, &s->par, slot_nch);
 			s->mix.dec.data =
 			    xmalloc(d->round * slot_nch * sizeof(adata_t));
@@ -1677,25 +1666,27 @@ slot_attach(struct slot *s)
 			s->mix.resamp.data =
 			    xmalloc(d->round * slot_nch * sizeof(adata_t));
 		}
-
-		log_puts("mix: cc = ");
-		log_puti(s->mix.cmap.nch);
-		log_puts(", dev_nch = ");
-		log_puti(dev_nch);
-		log_puts(", slot = ");
-		log_puti(s->mix.slot_cmin);
-		log_puts(":");
-		log_puti(s->mix.slot_cmax);
-		log_puts(", dev = ");
-		log_puti(s->mix.dev_cmin);
-		log_puts(":");
-		log_puti(s->mix.dev_cmax);
-		log_puts(", join = ");
-		log_puti(s->mix.join);
-		log_puts(", expand = ");
-		log_puti(s->mix.expand);
-		log_puts("\n");
-
+#ifdef DEBUG
+		if (log_level >= 3) {
+			log_puts("play: cc = ");
+			log_puti(s->mix.cmap.nch);
+			log_puts(", dev_nch = ");
+			log_puti(dev_nch);
+			log_puts(", slot = ");
+			log_puti(s->mix.slot_cmin);
+			log_puts(":");
+			log_puti(s->mix.slot_cmax);
+			log_puts(", dev = ");
+			log_puti(s->mix.dev_cmin);
+			log_puts(":");
+			log_puti(s->mix.dev_cmax);
+			log_puts(", join = ");
+			log_puti(s->mix.join);
+			log_puts(", expand = ");
+			log_puti(s->mix.expand);
+			log_puts("\n");
+		}
+#endif
 		s->mix.drop = 0;
 		s->mix.vol = MIDI_TO_ADATA(s->vol);
 		dev_mix_setmaster(d);
@@ -1726,30 +1717,33 @@ slot_attach(struct slot *s)
 			s->sub.resamp.data =
 			    xmalloc(d->round * slot_nch * sizeof(adata_t));
 		}
-		if (!aparams_eq(&s->par, &d->par)) {
+		if (!aparams_native(&s->par)) {
 			enc_init(&s->sub.enc, &s->par, slot_nch);
 			s->sub.enc.data =
 			    xmalloc(d->round * slot_nch * sizeof(adata_t));
 		}
 		
-		log_puts("sub: cc = ");
-		log_puti(s->sub.cmap.nch);
-		log_puts(", dev_nch = ");
-		log_puti(dev_nch);
-		log_puts(", slot ");
-		log_puti(s->sub.slot_cmin);
-		log_puts(":");
-		log_puti(s->sub.slot_cmax);
-		log_puts(", join = ");
-		log_puti(s->sub.join);
-		log_puts(", expand = ");
-		log_puti(s->sub.expand);
-		log_puts(", dev = ");
-		log_puti(s->sub.dev_cmin);
-		log_puts(":");
-		log_puti(s->sub.dev_cmax);
-		log_puts("\n");
-
+#ifdef DEBUG
+		if (log_level >= 3) {
+			log_puts("sub: cc = ");
+			log_puti(s->sub.cmap.nch);
+			log_puts(", dev_nch = ");
+			log_puti(dev_nch);
+			log_puts(", slot ");
+			log_puti(s->sub.slot_cmin);
+			log_puts(":");
+			log_puti(s->sub.slot_cmax);
+			log_puts(", join = ");
+			log_puti(s->sub.join);
+			log_puts(", expand = ");
+			log_puti(s->sub.expand);
+			log_puts(", dev = ");
+			log_puti(s->sub.dev_cmin);
+			log_puts(":");
+			log_puti(s->sub.dev_cmax);
+			log_puts("\n");
+		}
+#endif
 		/*
 		 * N-th recorded block is the N-th played block
 		 */
diff --git a/sndiod/sock.c b/sndiod/sock.c
index ee2aca5..26a5768 100644
--- a/sndiod/sock.c
+++ b/sndiod/sock.c
@@ -1071,23 +1071,28 @@ sock_execmsg(struct sock *f)
 		f->rtodo = sizeof(struct amsg);
 		if (log_level >= 2) {
 			slot_log(f->slot);
-			log_puts(": buffer size = ");
-			log_putu(s->appbufsz);
-			log_puts(", enc =  ");
+
+			log_puts(": ");
+			log_putu(s->rate);
+			log_puts("Hz, ");
 			aparams_log(&s->par);
 			if (s->mode & MODE_PLAY) {
-				log_puts(", play: ");
+				log_puts(", play ");
 				log_puti(s->mix.slot_cmin);
 				log_puts(":");
 				log_puti(s->mix.slot_cmax);
 			}
 			if (s->mode & MODE_RECMASK) {
-				log_puts(", rec: ");
+				log_puts(", rec ");
 				log_puti(s->sub.slot_cmin);
 				log_puts(":");
 				log_puti(s->sub.slot_cmax);
 			}
-			log_puts("\n");
+			log_puts(", ");
+			log_putu(s->appbufsz / s->round);
+			log_puts(" blocks of ");
+			log_putu(s->round);
+			log_puts(" frames\n");
 		}
 		break;
 	case AMSG_STOP: