The sales price is negotiable
You can purchase also without the tubes. The price will be decrease adequate.
In this case make your offer, and tell me by eBay messenger that you price
offer is for purchasing of the modules only, without the tubes ECC808.
Please consider your acceptable price, and click the button "Make offer", then you can
written the wanted amount. I will consider each reasonable offer and give for you my
answer, respectively accept your offer immediate.
--------------------------------------------------------------------------------------------------
I offered together 20 pieces, but in this moment is 12 last pieces for sale only, because
other are sold already. The modules are for right (R) - or for left (L) side the front panel
in Dynacord amplifiers. When you purchase as spare parts for a Dynacord, then tell me
which model (L or R) you want to buy.
I offer for sale in this auction very rare tube preamplifiers applied primarily as
microphone / line input stages in a PA amplifiers from German cult manufacture
Dynacord. These preamps have special constructed symmetric/balanced inputs. This
special developed solution allows an application of dynamic microphone with balanced
output about 150 - 500 Ohm (connected to input pins no. 1 and 3 - see the schematic
diagram) without an input transformers, respectively application of an unbalanced
signal source (CD player, tuner, tape machine etc...) with output resistance/impedance
from 100 Ohm to 100 kOhm (connected to the pins 1 and 2-see the schematic diagram).
The input resistance for unbalanced operation on the pins 1 and 2 is about 400 kOhm
(check the below the data sheet).
In these preamps are applied the tubes ECC808. The tube ECC808 is identical in the
technical parameter and efficiency with the tube ECC803 S, but hast other pin
diagram only. The tubes ECC808 were developed and produced from Telefunken as
special "low noise" triodes for very sensitive input stages. I equipped additional the
potentiometer with original knobs. All preamplifier modules has been checked and
revised. They work trouble free. You can purchase these modules without the tubes.
In this case the sales price can be discounted. Please write me by email or eBay
messenger when you want to buy cheapest without the tubes.
These pre-amplifiers have two "volume control" potentiometer:
1. First potentiometer as "gain control" located between the output from the first
triode and input the secondary triode, for adjustment the gain, respectively
for control the output signal from the preamplifier
You can purchase also without the tubes. The price will be decrease adequate.
In this case make your offer, and tell me by eBay messenger that you price
offer is for purchasing of the modules only, without the tubes ECC808.
Please consider your acceptable price, and click the button "Make offer", then you can
written the wanted amount. I will consider each reasonable offer and give for you my
answer, respectively accept your offer immediate.
--------------------------------------------------------------------------------------------------
I offered together 20 pieces, but in this moment is 12 last pieces for sale only, because
other are sold already. The modules are for right (R) - or for left (L) side the front panel
in Dynacord amplifiers. When you purchase as spare parts for a Dynacord, then tell me
which model (L or R) you want to buy.
I offer for sale in this auction very rare tube preamplifiers applied primarily as
microphone / line input stages in a PA amplifiers from German cult manufacture
Dynacord. These preamps have special constructed symmetric/balanced inputs. This
special developed solution allows an application of dynamic microphone with balanced
output about 150 - 500 Ohm (connected to input pins no. 1 and 3 - see the schematic
diagram) without an input transformers, respectively application of an unbalanced
signal source (CD player, tuner, tape machine etc...) with output resistance/impedance
from 100 Ohm to 100 kOhm (connected to the pins 1 and 2-see the schematic diagram).
The input resistance for unbalanced operation on the pins 1 and 2 is about 400 kOhm
(check the below the data sheet).
In these preamps are applied the tubes ECC808. The tube ECC808 is identical in the
technical parameter and efficiency with the tube ECC803 S, but hast other pin
diagram only. The tubes ECC808 were developed and produced from Telefunken as
special "low noise" triodes for very sensitive input stages. I equipped additional the
potentiometer with original knobs. All preamplifier modules has been checked and
revised. They work trouble free. You can purchase these modules without the tubes.
In this case the sales price can be discounted. Please write me by email or eBay
messenger when you want to buy cheapest without the tubes.
These pre-amplifiers have two "volume control" potentiometer:
1. First potentiometer as "gain control" located between the output from the first
triode and input the secondary triode, for adjustment the gain, respectively
for control the output signal from the preamplifier
on the point no. "10"
2. Secondary potentiometer as "volume control" located on the output the preamp,
for adjustment the output signal on the point no. 11 for control of extern devices
( for example: a tape machine, or an effect devices as echo machine etc.. )
The secondary "volume control" can be used also as the adjustable master output
from the preamplifier, when the first potentiometer operate as a "gain control only"
2. Secondary potentiometer as "volume control" located on the output the preamp,
for adjustment the output signal on the point no. 11 for control of extern devices
( for example: a tape machine, or an effect devices as echo machine etc.. )
The secondary "volume control" can be used also as the adjustable master output
from the preamplifier, when the first potentiometer operate as a "gain control only"
These preamplifiers have two tone control potentiometer - "Bass" and "Treble"
The frequency response is as follow:
Treble: +10 dB to - 16 dB with 16 kHz ( +15 dB to - 20 dB with 20 kHz)
Bass: +10 dB to - 15 dB with 70 Hz (+15 dB to - 20 dB with 20 Hz)
Find below the schematic diagram of the preamplifier module, and the data sheets of
PA amplifier from the primarily application of these modules:
The frequency response is as follow:
Treble: +10 dB to - 16 dB with 16 kHz ( +15 dB to - 20 dB with 20 kHz)
Bass: +10 dB to - 15 dB with 70 Hz (+15 dB to - 20 dB with 20 Hz)
Find below the schematic diagram of the preamplifier module, and the data sheets of
PA amplifier from the primarily application of these modules:
Below is the data sheet of the complete PA amplifier from the primarily
application these preamplifier modules:
For sale in this auction are 8 pieces of preamplifiers.
Selling piecewise - the price is for one piece only!
You can buy more pieces. For more pieces please change the digit in the quantity windows.Selling piecewise - the price is for one piece only!
The weight is 125 g per unit only.
Shipping world wide as registered airmail low insured costs as follow:
for 1 to 2 units - 7 EUR (packet to 500 g)
for 3 to 6 units - 10 EUR (packet to 1 kg)
for 7 to 12 units - 20 EUR (packet to 2 kg)
Do not hesitate to send questions to my post box,respectively by eBay messenger,
but more photos I can send by email only.
