diff --git a/src/devices/sound/volt_reg.cpp b/src/devices/sound/volt_reg.cpp
index aade7ddff01..dbd922a808f 100644
--- a/src/devices/sound/volt_reg.cpp
+++ b/src/devices/sound/volt_reg.cpp
@@ -2,15 +2,13 @@
 // copyright-holders:smf
 /***************************************************************************
 
-    volt_reg.c
+    volt_reg.cpp
 
     Direct current.
 
     TODO:
     - If we continue having this device in MAME, add support for default voltage other
       than (currently hardcoded) 5.0
-    - When used in combination with a DAC, vreg device 1st stream update is skipped,
-      causing the DAC to fetch invalid input data. Why does this happen?
 
 ***************************************************************************/
 
@@ -29,7 +27,7 @@ voltage_regulator_device::voltage_regulator_device(const machine_config &mconfig
 
 void voltage_regulator_device::device_start()
 {
-	m_stream = stream_alloc(0, 1, 500);
+	m_stream = stream_alloc(0, 1, 48000 * 4);
 }
 
 void voltage_regulator_device::sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples)
diff --git a/src/mame/drivers/fidel_cc1.cpp b/src/mame/drivers/fidel_cc1.cpp
index 902b3c0d3d5..e02be278761 100644
--- a/src/mame/drivers/fidel_cc1.cpp
+++ b/src/mame/drivers/fidel_cc1.cpp
@@ -53,8 +53,10 @@ to CC1, or CC3.
 Note that although these 2 newer versions are known as "Chess Challenger 3" and
 "Chess Challeger 10 C" nowadays, those are not the official titles. CC3 simply
 says "upgraded version" on the 1st page of the manual (even the newly sold ones,
-not just the literal CC1 upgrades). UCC10 mentions "10 levels of play". Fidelity
-started adding level numbers to their chesscomputer titles with CCX and CC7.
+not just the literal CC1 upgrades). UCC10 mentions "10 levels of play". Consumenta
+Computer(reseller of Fidelity chesscomputers) did name it Chess-Challenger 10 C.
+Officially, Fidelity started adding level numbers to their chesscomputer titles
+with CCX and CC7.
 
 ******************************************************************************/