The Price is for 2 Pcs
VR56-10E/11402
MADE IN CANADA
MADE BY ROGERS
The VR56 is a vintage octal-based (8-pin) vacuum pentode tube manufactured by Rogers (a Canadian company, part of the Rogers Vacuum Tube Company founded in the 1920s). It’s electrically equivalent to the EF37A (and related types like EF36, CV358)
NOTE: We have 147 Pcs in stock, Please reconfirm stock position
YeongSik Kim Ph.D –
The precious vacuum tubes arrived safely. They were carefully packaged and shipped to me. It’s thrilling to see these historical artifacts. I also received the Rogers products you sent me. Thank you for your consideration.
I’d like to age them and evaluate their sound quality. It’ll take some time, but I’ll report back with my evaluation and results.
Results of Tube Evaluation
This is the result of an evaluation using a 300B single-ended Western Electric 91B type amplifier with a Rogers (Canada) V.R.56 pentode vacuum tube. The 300B tube used matched pairs of WE300B.
The following is the audio system used for the test:
-. Vacuum Tube Amplifier: 300B single-ended Western Electric 91B type (WE300B, Output transformer LUNDHAL LL1623, Coupling capacitor MIFLEX KPCU-01 (Paper+PP+Oil))
-. Turntable: THORENS TD 190-2, Ortofon 2M Blue
-. Interconnect cable: Neotech NEI-3001 MK III
-. RCA plug: Neotech DG-201
-. Speaker cable: Nanotec System GS#79 nano3 “Cayenne”
-. Speaker: Klipsch Heresy IV
Units under test: Rogers Canada V.R.56
Condition: NOS Rare, clean pins, very good appearance, matched pairs
Changes in initial state after powering up
: After powering up for about an hour and supplying sound, the center of the sound image was shifted to the right, but over time, the center gradually shifted toward the center.
This is believed to be due to the initial aging caused by the current supply.
My first impression upon hearing this was “Wow~ Amazing!”
What was most surprising was the orchestral performance, which spread far beyond the space where the two speakers were positioned, leaving me mesmerized for a moment, completely absorbed in the music.
The position and presence of each instrument made me feel as if I were present in the room.
High resolution and wide bandwidth. The resolution is surprisingly high. Overall, the high/mid/low frequencies are well-balanced, and the low frequencies are also solid.
When listening to a large orchestra, I experienced both a sense of presence and a sense of comfort. I didn’t feel tired even after long listening sessions.
However, when listening to music featuring a violin soloist and an orchestra, the soloist seemed to be slightly behind the orchestra, which was a bit disappointing. This suggests that the violin range has relatively low gain compared to other instruments. This was also confirmed by the fact that female vocalists were positioned slightly further back on stage than male vocalists.
When listening to chamber music or jazz vocals, no other tube can compare to this one.
I’m confident that this tube will be loved by those who appreciate resolution and a wide soundstage.
Furthermore, here are the results of comparisons with other tubes:
The GEC 6J7GT has a bright, open treble and a spacious soundstage, but the mid-low range felt slightly lighter.
The Rogers V.R.56 has a slightly more energetic and spacious soundstage than the GEC 6J7GT. The treble tends to roll off slightly, which can feel a bit harsh, especially with female vocals.
It can be considered more of a monitor-like tube.
The Mullard EF37A has the warmest and most comfortable midrange, and the treble is attenuated for a smooth and comfortable sound.
It’s a tube that really brings out the richness of vocals.
When the instrumental lineup increases, it can feel a bit monotonous and stuffy compared to the Rogers V.R.56.
The Valvo EF37A has a monitor-like tone.
However, while it has a relatively narrower soundstage than the Rogers V.R.56, its resolution is similar or higher.
However, when listening to a violin soloist and an orchestra playing together,
I noticed that the soloist’s position was slightly more forward than the orchestra.
For the time being, I plan to alternate between the Rogers V.R.56 and the Valvo EF37A.
Thank you so much for introducing me to these excellent tubes. I’m so happy to have been given this historic and inspiring opportunity.
*I want to clarify that the above comparison was made with the original circuit maintained and only the vacuum tubes replaced.
The midrange characteristics mentioned above can be easily enhanced by appropriately adjusting the cathode resistor, bypass capacitor, coupling capacitor capacitance, and 300B grid resistor of the Roger’s V.R.56.
Thank you so much for providing such a touching moment. My trembling heart is having a hard time calming down.
Thanks & Regards,
YeongSik Kim, Ph.D.