Low gain preamplifier

juwantoharun · 25th January 2010, 06:53 AM

Hi everyone, I'm new here, my name is Juwanto and i want to make a cd buffer using vacuum tube with very low gain because i've already use a preamp, so if i use a cd buffer with med or high gain, my power amp will override or clipping, i have some tubes like 12AX7, 12AU7, 12AT7, 6DJ8 and 6080 but i want to try with 6080 because i think it is sexy using a big tube for preamp, i hope for few suggestion and may i have its schematic? someone please help me, thank you.

makaiyumtony · 25th January 2010, 01:34 PM

6080 with a 2.5K to 600 ohm out put transformer, you will have a low gain amp
Tony Ma

alexg · 25th January 2010, 01:53 PM

The 6080 will be a nice preamp and a winter heater.

Look for the 12b4 thread, low gain and sounds very, very neutral.

ethermion · 25th January 2010, 02:21 PM

Try this one. 6080 plugs right in.

Low-mu preamp

juwantoharun · 4th February 2010, 07:02 AM

Thanks for all, I want to ask for some question, is it possible that the 6080 tube working with low voltage (12V or 24V) ? What was the lower voltage should be and what effect will appear working with low voltage?
Thank for everyone who share with me.

Arnulf · 4th February 2010, 07:50 AM

Lower gain & more distortion.

radiostar · 4th February 2010, 10:08 AM

A bit more than 100V ...

Brit01 · 5th February 2010, 12:10 AM

6080 is nice. I've tried this 6080 as a CF after a 6CG7 gain stage.

Yep they get damn hot and require significant heater supplies.
But nice big tubes

radiostar · 5th February 2010, 10:29 AM

15 watts just for heating

, lovely preamp for winter time ...

Glowbug · 5th February 2010, 11:06 AM

Why not swap a tube preamp for your current one

25th January 2010, 06:53 AM	#1
juwantoharun diyAudio Member Join Date: Nov 2009	Low gain preamplifier Hi everyone, I'm new here, my name is Juwanto and i want to make a cd buffer using vacuum tube with very low gain because i've already use a preamp, so if i use a cd buffer with med or high gain, my power amp will override or clipping, i have some tubes like 12AX7, 12AU7, 12AT7, 6DJ8 and 6080 but i want to try with 6080 because i think it is sexy using a big tube for preamp, i hope for few suggestion and may i have its schematic? someone please help me, thank you.

25th January 2010, 02:21 PM	#4
ethermion diyAudio Member Join Date: Apr 2005 Location: ffx station, va	Try this one. 6080 plugs right in. Low-mu preamp __________________ -e

4th February 2010, 10:08 AM	#7
radiostar diyAudio Member Join Date: Apr 2009	A bit more than 100V ... __________________ tubes.rs facebook.com/tubes.rs

5th February 2010, 10:29 AM	#9
radiostar diyAudio Member Join Date: Apr 2009	15 watts just for heating , lovely preamp for winter time ... __________________ tubes.rs facebook.com/tubes.rs

5th February 2010, 11:06 AM	#10
Glowbug diyAudio Member Join Date: Feb 2006 Location: Hillsborough, NC/McLean, VA	Why not swap a tube preamp for your current one __________________ Jim J.

25th January 2010, 01:34 PM	#2
makaiyumtony diyAudio Member Join Date: Dec 2009 Location: whitby ont	6080 with a 2.5K to 600 ohm out put transformer, you will have a low gain amp Tony Ma

25th January 2010, 01:53 PM	#3
alexg diyAudio Member Join Date: Jan 2005 Location: Philippines	The 6080 will be a nice preamp and a winter heater. Look for the 12b4 thread, low gain and sounds very, very neutral.

4th February 2010, 07:02 AM	#5
juwantoharun diyAudio Member Join Date: Nov 2009	Thanks for all, I want to ask for some question, is it possible that the 6080 tube working with low voltage (12V or 24V) ? What was the lower voltage should be and what effect will appear working with low voltage? Thank for everyone who share with me.

4th February 2010, 07:50 AM	#6
Arnulf diyAudio Member Join Date: Feb 2009	Lower gain & more distortion.

5th February 2010, 12:10 AM	#8
Brit01 diyAudio Member Join Date: Jul 2008	6080 is nice. I've tried this 6080 as a CF after a 6CG7 gain stage. Yep they get damn hot and require significant heater supplies. But nice big tubes

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