Valvo

Valvo ECC83 12AX7 Matched Pair 45° Angled Getter - Hamburg 1957 mC1 - Same code

$662.00 USD

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Product Summary

As much as they are known for their super power in revealing details in sound, these tubes can get punishing to lossy digital sound sources such as streaming video (not even 4K!), HD audio streaming, MP3 (not even 320kbps) playback and distortions in sound will be amplified and displayed with no mercy! Dedicated CD transport or lossless play back on PC/Mac (not on mobile devices) are recommended if you want to fully unleash these tubes' amazing power in your system. Phono, if available, is highly recommended to be used as sound source because analog input is lossless by definition.

Sound Qualities

Under the commanding pose of the 45° angled getter support lies the ultimate clarity of sound: everything can be heard, whether you knew they existed before or not, or whether you think they should exist or not. To get everyone on the same page, we will be comparing these to the Hamburg-made Valvo ECC83's with regular getter support version only, which is already an excellent choice for audiophiles seeking the distinctive German tube sound: the grip is tighter with a ton of weight added to the overall sound presentation, especially to the midrange, which feels much warmer and more intimate; the sound stage is expanded in all three dimensions - wider, taller and deeper, and almost feels like projected from a 45-degree angle somewhere (but that's probably only in your head) as you get to "see" more information from the same angle - the true holographic sound stage presentation; the naturalness of sound is not heard anywhere else in the sense that these tubes tell you what IS and what IS NOT in your sound, e.g. you can tell the sound of natural rain in some movies from the sound of fake rain (water poured from hoses above the stage) in other movies; the clarity of sound is "clinical" - as in how your doctor would say you are either sick or not sick and there's absolutely no uncertainty or ambiguity in between and perhaps this is why they can get punishing to lossy digital sound sources; the musicality is unequalled as by now the only thing left in your music for you to hear is EVERYTHING in your music as long as the sound source is right.

Professional Tube Testing

This set was tested and certified by RoeTest V11 Professional Tube Testing System with the following result:

Tube 1:

Measured transconductance (GM): 1.33/1.31 mA/V - 83%/82% (100% = 1.6 mA/V)

Measured plate current (IA): 0.835/0.82 mA - 70%/68% (100% = 1.2 mA)

Tube 2:

Measured transconductance (GM): 1.1/1.24 mA/V - 69%/78% (100% = 1.6 mA/V)

Measured plate current (IA): 0.557/0.745 mA - 46%/62% (100% = 1.2 mA)

NO shorts, leakage or gas. NO noise or microphonics.

Curve trace is also included in the original RoeTest report.

Appearance & cosmetic condition

Silkscreen: 90% - 95% (Pristine)