I've had little luck researching this topic on the Internet.
The best answer I picked up was that the money spent on a Pro-Broadcast CD Player goes into durability for touring/frequent relocation (plus cuing features most hobbyist don't need/use), and not money/resources which go into listening quality - highly tuned to audiophile standards.
I suspect that it goes deeper than that, especially concerning output matching to a preamp. For the record, I'm only interested in RCA non-balanced connections to simplify things.
Example 1 - Pro/Broacast: Tascam CD-6010 (about $800-$1,200)
http://tascam.com/product/cd-6010/
The column to the far right has the output information.
http://tascam.com/product/cd-6010/specifications/
Example 2 - Consumer: tweaked by an audiophile firm
Not a classic consumer grade piece of equipment (modified pro piece), but a similar enough as that's how it's being marketed.
The Zen CD Player - Decware model ZCD240 (about $1,300)
http://www.decware.com/newsite/ZCD.htm
The industry standard varies a bit from what I read, 2.0 to 2.4 volts in practice.
I don't know why the pro piece lists the output in ohms, and the consumer piece is listed in volts. (EDIT- I see the dBV now.........)
This could be a problem, and the reason for this post.
I need for data/information in order to use this online calculator:
http://www.rapidtables.com/calc/electric/watt-volt-amp-calculator.htm
Ending Thoughts:
Another puzzlement specific to the Decware Zen CD Player, will the variable setting matching output be of any use if the preamp is a standard type with non-variable inputs?
I have an older tube preamp, not sure how messing with the RCA CD Player signal input (be it measured in ohms or volts) will be tolerated by the old gal. She's Italian and used to run hot before she was serviced years ago. I'd rather not taunt her if I don't have to.
EDIT-1 Found some info in an attempt to answer my own question.
https://en.wikipedia.org/wiki/Decibel#Voltage
The best answer I picked up was that the money spent on a Pro-Broadcast CD Player goes into durability for touring/frequent relocation (plus cuing features most hobbyist don't need/use), and not money/resources which go into listening quality - highly tuned to audiophile standards.
I suspect that it goes deeper than that, especially concerning output matching to a preamp. For the record, I'm only interested in RCA non-balanced connections to simplify things.
Example 1 - Pro/Broacast: Tascam CD-6010 (about $800-$1,200)
http://tascam.com/product/cd-6010/
The CD-6010 features the field-proven CD-5010B drive asembly - the same drive used in the TASCAM CD-9010 & CD-9010CF - our top Broadcasting models. The CD-6010 is the new standard of Broadcast, Installation, and Touring CD players.
The column to the far right has the output information.
http://tascam.com/product/cd-6010/specifications/
Output impedance - - Less than 200ohms
Nominal output level - - -10dBV
Max output level
-
- +6dBV
Example 2 - Consumer: tweaked by an audiophile firm
Not a classic consumer grade piece of equipment (modified pro piece), but a similar enough as that's how it's being marketed.
The Zen CD Player - Decware model ZCD240 (about $1,300)
http://www.decware.com/newsite/ZCD.htm
The ZCD-240 uses the same high-quality TEAC-made CD drive designed for audio as other models in the CD-200 series. Developed by TEAC, the CD drive is optimized for audio playback and professional reliability – unlike competing players using computer drives...........................
Decware Designed Output stage
It's how you get the Decware Sound from a reliable and affordable platform. Since 2001 we have been offering a CD player with a tube output stage, in fact there has been many. This is the first year we are stepping up our game with the only thing that can sound better, a wide bandwidth transformer design with adjustable output voltage...........................
Sound Quality and Adjustability
All of the above features are pretty meaningless if the unit doesn't sound exceptional!
The imaging and slam is undeniably obvious. Yes, the staging and imaging and detail is as you would expect from a hi-end DAC, but what the ZCD-240 has that most by comparison lack, is BALLS. This has always been the case, even when the output stage was tube, the Zen CD Players have always featured a fully adjustable output that can be turned to many times the industry standard 2 volts. When combined with a preamplifier or amplifier with an adjustable input level, you can adjust the ZCD-240 by ear to achieve the density and drive that sounds best. If your amp doesn't have an input level control, or you don't have a preamp, you can still use the ZCD-240 in a pinch by adjusting the volume via the rear output level control..............................
Specifications
Specifications for this player's operation are unchanged from the original Tascam model. The only exception is the additional output stage and it's adjustable voltage level from 0 to 7.75 volts.
The industry standard varies a bit from what I read, 2.0 to 2.4 volts in practice.
I don't know why the pro piece lists the output in ohms, and the consumer piece is listed in volts. (EDIT- I see the dBV now.........)
This could be a problem, and the reason for this post.
I need for data/information in order to use this online calculator:
http://www.rapidtables.com/calc/electric/watt-volt-amp-calculator.htm
Ending Thoughts:
Another puzzlement specific to the Decware Zen CD Player, will the variable setting matching output be of any use if the preamp is a standard type with non-variable inputs?
I have an older tube preamp, not sure how messing with the RCA CD Player signal input (be it measured in ohms or volts) will be tolerated by the old gal. She's Italian and used to run hot before she was serviced years ago. I'd rather not taunt her if I don't have to.
EDIT-1 Found some info in an attempt to answer my own question.
https://en.wikipedia.org/wiki/Decibel#Voltage
dBV
dB(VRMS) – voltage relative to 1 volt, regardless of impedance.[2]
...................In professional audio, equipment may be calibrated to indicate a "0" on the VU meters some finite time after a signal has been applied at an amplitude of +4 dBu. Consumer equipment typically uses a lower "nominal" signal level of -10 dBV.[39] Therefore, many devices offer dual voltage operation (with different gain or "trim" settings) for interoperability reasons. A switch or adjustment that covers at least the range between +4 dBu and -10 dBV is common in professional equipment.
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