“Piccolo” price drop, compact tube preamp

[mwhouston]

Further Information:  This smart looking and compact tube preamp uses (matched) JAN GE 5654W tubes. The kit is sold with lesser performing 6J2 but here they have been upgraded. The enclosure is Hammond extruded anodised Al smart looking enclosure. Three inputs are selected by two front switches. The black knob is a large anodised Al type with a good feel. All internal components are of very good quality. Gain is 16db @1KhZ into 100K load.
 

Power is via a 12VAC 1A plug pack and connects to the preamp via a two pin locking connection. Internally HT is generated to produce a dead quiet preamp. Under test up to 90% max volume there is 0.0mV of noise. At 100% volume, 0.4mV of noise. Input impedance is 100K. The blue colour when on is a pleasant glow and the filaments fire is also easily seen. Tube rolling is possible. 
 

From such small tubes I didn’t expect how good sounding this preamp could be. The sound is very clear and detailed. Im happy to sell it with a two week audition. If you are not happy with the performance all money will be refunded just pay total postage - $30. Postage is included in the price. 

http://retro-thermionic.blogspot.com/2023/09/piccolo-5654w-compact-tube-preamplifier.html

 

 

ELECTRICAL DISCLAIMER

This product has not been manufactured by a qualified individual or company, therefore contains electrical circuits that do not necessarily comply with Australian Standards. I understand that as the seller, I may be liable to repercussions in the event of equipment failure. By advertising and selling this product, as the seller I also agree that I am solely liable, and the publisher of this website takes no responsibility for any injury or death resulting from, whether directly or indirectly, any accident that may happen as a result of the failure of the product being sold. If in doubt, seek the services of a qualified electrician to inspect the product to ensure it is safe for use.

 

 

Edited September 30, 2023 by mwhouston

[Guest]

Hi, do you know how much gain, if any this unit has?

[mwhouston]

I’d say medium to high. As above if you are not happy with the preamp for any reason you can return it for money back minus postage. The JAN GE 5654W tube is the high performance mill spec upgrade to the 6J1. 

[mwhouston]

I’ve been asked fir a few measurements;-

• gain with pot at 100% into 100K load = 16db
• noise with pot at 100% = 1mV (anything under 2.5mV is considered very good, this preamp far exceeds that).
• noise with pot at 50% or 0% = 0.0mV. Cannot be read by any of my meters. 
   

Obviously an extremely quiet tube preamp.