Psvane 845B-HiFi Series, mica free (NEW)

Preview: PS-845-B-HIFI-MASTER Psvane 845B-HiFi Series, mica free (NEU)

Preview: PS-845-B-HIFI Psvane 845B-HiFi Series, mica free (NEU)

PS-845-B-HIFI-MASTER Psvane 845B-HiFi Series, mica free (NEU)

PS-845-B-HIFI Psvane 845B-HiFi Series, mica free (NEU)

From €119.00 *

*Prices incl. VAT plus shipping costs

In Stock, delivery time approx.1-4 working days (Within Germany)
The delivery times for shipping abroad can be found here.

Part Number: PS-845-B-HIFI
Packaging Size: 9x9x25 cm
Packaging Weight: 0.29 kg
UPC: 4251594915416

Psvane 845B-HiFi Series, mica free (NEW) 845B is direct-heated type thorium... more

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Product information "Psvane 845B-HiFi Series, mica free (NEW)"

Psvane 845B-HiFi Series, mica free (NEW)

845B is direct-heated type thorium tungsten cathode triode

which can be used as class A1 and AB1 amplification.

Mica free construction type

dimensons (exemplaric): 190.2 mm total length, 180.1 mm length without pins, 58.5 mm diameter glass, 47.0 mm diameter base

Heater

Uf------------------------------------10 V

If----------------------------------3.25 A

Maximum Rating

Ua----------------------------------1250 V

Pa------------------------------------75 W

Pout(max.sig)------------------------150 W

Ia(max)------------------------------120 mA

Direct Interelectrode Capacitances

Input----------------------------------6 PF

output-------------------------------4.5 PF

Grid to plate-----------------------14.5 PF

Static parameter

Ua----------------------------------1250 V

—Ug----------------------------------200 V

Ia------------------------------------80 mA

Gm-------------------------------------3 mA/V

ri-----------------------------------1.7 KΩ

u--------------------------------------5

RL-----------------------------------3.4 KΩ

Ug(pk)--------------------------------69 V

Pout----------------------------------15 W

Recommended Operating Conditions（reference value）

class A1 .single tube：

Ua------1000 1000 1250 V

—Ug--- 145 155 209 V

RL-----------6 9 16 KΩ

Ia------------90 65 52 mA

Gm---------3.1 — — mA/V

Ug(pk)--— 110 148 V

ri----------1.7 1.9 2.1 KΩ

Pout-------24 21 24 W

Push-pull.class AB1：

Ua------------------- 800 1000 1000 1250 V

—Ug----------------- 125 170 175 225 V

RL---------------------- 4.5 4.6 4.6 6.6 KΩ

Ia--------------------------80 70 40 40 mA

Ug(pk)------------------177 240 — — V

Ia（mAx.sig）-------170 230 230 240 mA

Pout-----------------------40 75 75 115 W

Tube Type:	845/SE3945/CV1831/38213
Socket:	4 Pin(Jumbo)

Read, write and discuss reviews... more

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Customer evaluation for "Psvane 845B-HiFi Series, mica free (NEW)"

From: Zen On: 27 Mar 2024

they sound great

I bought a pair of these 8 years ago, the burn in time was long, but then they sounded great for all this time.

Now that one is down on volume compared with the other, I am back to buy a replacement pair.

It is interesting to note that the RCA 845 also used a thorium tungsten cathode.

From: Rob On: 12 Dec 2021

Great 845 tubes that won’t break the bank

First up TAD are superb to deal with. Great advice and fast, safe shipping.

I have Cary 211’s, so with a quad of 845’s and a quad of 300b’s I can’t stretch to “super tubes”, but the Psavne 845 are a definite upgrade to the standard Shuguang 845.

More details, more controlled bass and the workmanship looks top notch. Very pretty tubes and not having the mica gives a great view into the tubes.

Not quite the big jump written about on the old positive feedback review, but still an improvement. Don’t believe the 6 hour burn in from that article either, took them 60 hours to settle down and lose a bit of hardness. After 60 hours they are superb.

Recommend if you can’t stump for the top of the line for whatever reason.

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