Australian HiFi – July 2019

Australian Hi-Fi 29

Yamaha CD-S300 CD/USB Player

Graph 1.
THD @ 1kHz
@ 0dB
recorded level.

Graph 3.
THD @ 1kHz
@ –20dB
recorded level.

Graph 5.
THD @ 1kHz
@ –91.24dB
recorded level.

Graph 7.
Impulse Train.
(One maximum
amplitude
positive
sample every
70 samples
(630 pulses
per second).

Graph 9.
THD @ 20kHz
@ 0dB
recorded level.

Graph 2.

THD @ 1kHz

@ –6dB

recorded level.

Graph 4.

THD @ 1kHz

@ –60dB

recorded level.

Graph 6.

THD @ 1kHz

@ –90.31dB

recorded level.

(With dither)

Graph 8.

CCIF Distortion

(Twin-Tone

Intermodula-

tion) @ 0dB

using 19kHz

and 20kHz test

signals in 1:1

.

Graph 10.

Frequency

Response at

@ 0dB

recorded level.

140. (^000). 00


141. 00


142. 00


143. 00


144. 00


145. 00


146. 00
     dBF 0. 00 S .EWPORT 4EST ,ABST


147. (^000). 00 z.. 12000.00. 20000.00


148. 00


149. 00


150. 00


151. 00


152. 00


153. 00
     dBF 0. 00 S ABS


154. 00


155. 00


156. 00


157. 00


158. 00


159. 00


160. 00
     dBF 0. 00 S .EWPORT 4EST ,ABST


161. (^000). 00 Hz 10000.00 20000.00 30000.00 40000.00


162. 00


163. 00


164. 00


165. 00


166. 00


167. 00
     dBFS 0. (^00) ABSB


168. 00


169. 00


170. 00


171. 00


172. 00


173. 00


174. 00
     dBF 0. 00 S .EWPORT 4EST ,ABSP B


175. 00


176. 00


177. 00


178. 00
     20.0 0
     dBF 0. 00 S .EWPORT 4EST ,ABST B

. z.. 2.. 2.

80. 00

60. 00

40. 00

20. 00

0. 00

100. 00

80. 00

60. 00

40. 00

20. 00

dBF 0. 00 S .EWPORT 4EST ,ABST

0. 00 Hz 00

80. 00

60. 00

40. 00

20. 00

dB 0. 00 S

00

0 40

ORT 4EST ,ABSA

time-reversed ringing of a standard delta-sig-
ma oversampling filter.
Newport Test Labs measured the out-
put voltage of the Yamaha CD-S300 when
playing back a 1kHz signal recorded at 0dB
as 2.11005-volts from the left channel line
output and 2.1336-volts from the right chan-
nel, so essentially only a 0.01V difference,

equating to a channel balance of 0.09dB,

which is excellent.

Newport Test Labs was not able to measure

power consumption in standby mode, be-

cause the CD-S300 does not have a standby

mode. If, as a result, you leave it switched on

(but not playing) when you’re not using it, it

will draw a continuous (though admittedly

rather insignificant) 7.47-watts from your

mains power supply. When you’re actually

playing a CD, power consumption increases

to just over 10-watts.

Other than the fact that it didn’t appear

to have a stand-by circuit, the Yamaha CD-

S300 deliveredsolidperformance on the test

bench. Steve Holding