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STEREO VACUUM TUBE PREAMP

CAT # AMP-2T 4 out of 5 stars(7 Reviews) Write a Review

$ 19.95
$19.95 each
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Product Description
A preamp raises a low-level signal, like the output of a turntable or microphone, to a line-level signal required by a power amplifier.

• Stereo vacuum tube preamplifier
• Includes two 6J2 tubes (replacements 6AK5, 6AU6, 5654)
• RCA jacks for input -- ie, turntable, microphone
• RCA jacks for output to power amplifier (note: the output jacks are the ones closest to the power jack)
• Volume control with on/off switch
• 2.1mm co-ax power jack input
• Requires external power supply, 12VAC, 0.8A. (Our CAT# ACTX-1214 works great)
• Dimensions: W 77mm x D 75mm x H 57mm
• For a case designed for this preamp, see our CAT# AMP-2TC
Spec sheet available in PDF format.
WARNING: May cause cancer or reproductive harm.
California Prop. 65
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Customer Reviews 4 out of 5 stars(7 Reviews)

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More info needed 5 out of 5 stars

Reviewer: from MILTON, FL USA

5 stars are for placemarker. It would help to know ( and help Allt. sell) details such as: are tubes included [ALL ELECTRONICS: Yes, the tubes are included - you get everything in the main picture] ? The big one, is this line preamp or phono ? Ad seems to indicate phono, but then why have a volume pot - that would be on line preamp or amp, not phono. Also would be nice to have some specs [ALL ELECT: Unfortunately, we don't have any more specs at this time]. If this is a phono/mic preamp is there a way to switch from phono to mic compensation ?

14 of 16 people found this review helpful. Do you? Yes No

Vacuum Tube pre-amp 3 out of 5 stars

Reviewer: from New Hampshire, USA

Just got this today. Haven't tried it out. The circuit card looks good. The tubes look pretty rough, pins bent and corrosion on one tube's pins. Also no markings to indicate what type of tube. I assumed this would use 12AX7 tubes which are common in pre-amps, and I have in my parts bin. But these look smaller. Can someone tell if 12AX7 tubes will work? I'll update the review after firing it up.

5 of 8 people found this review helpful. Do you? Yes No  Certified buyer

I bought two but... 3 out of 5 stars

Reviewer: from Florida USA

This little preamp seems to work well, but there is no documentation with it, there's nothing to tell you what tubes are needed to drive it or anything else about it. The tubes are unmarked and I had to use Google translate to figure out which was the input and which was the output because all the markings are in Chinese characters. So, five stars for price and one star for documentation makes it three stars overall.

7 of 7 people found this review helpful. Do you? Yes No  Certified buyer

Deduced Data 4 out of 5 stars

Reviewer: from Mountain City, TN

First examination of valve markings provides the numbers 6J19 OR 6J1. A search on the Web provides a data sheet for 6J1. It's in Chinese, but fortunately, the Chinese use Arabic numbers.
If you are familiar with valve data sheets, you know what parameters are probably provided:
1) Filament volts- 6,3
2)Valve layout- Pentode .
3) Design center or Max anode volts- 120
4)Design center or Max screen volts- 120
5) Anode current- 7,35mA.
6) Screen current- 3,2mA.
7) Transconductance- 5,1mA/volt.
8) Anode resistance- 12-25Kohm.
It looks like it's a sharp cutoff, low voltage pentode.

I hope that this helps.

LS-

7 of 7 people found this review helpful. Do you? Yes No  Certified buyer

In/Out are... 5 out of 5 stars

Reviewer: from Placentia, CA

If you look at the center photo above, showing the inputs, outputs, and power input; the signal input is on the left furthest from the power input. The audio output is closest to the power input. Hope this helps. I also bought the case and labeled these, but I agree that we shouldn't need to search for this type of information after purchasing the product.

6 of 6 people found this review helpful. Do you? Yes No  Certified buyer
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