Also this reviews will be accompanied by a section with graphs of technical measures of the most important parameters.
There is no such thing anywhere else, as far as I know. Not even the manufacturers themselves detailed the technical features of their own devices at this level.
This new section has been developed for an objective comparison of different devices.
In order to avoid interpreting the measurements incorrectly, it is very important to read the warnings carefully the first time.

The Grundig 5005W was the progenitor of a new line of Grundig radios model. The 5005W line will be followed, with some modifications, by the 5010, the 4010 and other less and less prestigious series.
From the previous top of the range model, the Spitzen-Super UKW 495W inherits the beautiful full-range speakers, one of which is equipped with a coaxial electrostatic tweeter.
There are also many mechanical elements in common with the 495W, the chassis has a very similar setup as does the high frequency group and the variable capacitor, the keyboard and much more. The tuner section is instead more elaborate, sensitive and selective and the low frequency section has completely changed.

The FM converter stage is interesting. Unlike the usual stages composed of the classic ECC85 double triode (specially designed for this), an ECF12 pentode/triode was used on the 5005W. The pentode section is used as an antenna amplifier and is very quiet for a pentode. The triode acts as an AF oscillator. There is then a further medium frequency amplifier pentode, an EF15, before entering the grid of the ECH11 amplifier/mixer.

The low frequency stage is an excellent example of a Push-Pull amplifier, with two EL41s, the most powerful compact tubes at the time.
The phase inverter stage consists of a double triode Ecc40 in "Anode follower" configuration. Also in this case the characteristics of the tube are important. To have correct driving of the two final EL41s, which work in Push-Pull, one on the positive half-waves and one on the negative half-waves, it is advisable to check the signal present on the two grids of the final pentodes. The configuration of the inverter might make you think that the two triodes of the ECC40 work symmetrically, but this is not the case. The first triode works as a preamplifier while the second has only the purpose of inverting the signal, indeed, it has a slightly negative amplification. The advantages of this type of inverter are the high voltage available at the output to effectively drive the finals and the high rate of internal feedback which guarantees a high linearity of response compared to other types of cheaper inverters.

The counter-reaction is moderate, and affects the response curve. The resulting sound is very open, with great presence in the mid and high tones and sufficiently damped bass.
The cabinet is very robust and free of vibrations and resonances.

The speakers:
There are three speakers, all on the front.
These are two full-range cones of 25 cm each and a coaxial electrostatic tweeter which is inserted when the TA button or the UKW/FST button is pressed.
The advantage of having two separate full-range speakers is that for the same amount of air moved, the cones and the voice coil support are much lighter to move, so each speaker is much faster and more responsive. All this translates into more responsive and muffled bass and without serious resonances.
The die-cast baskets ensure the mechanical rigidity of the speaker itself, therefore again reduction of resonances  and greater efficiency of the transducer (no force is dissipated in the vibration of the basket).
The entire frequency range is sent to the full-range speakers and the high part is cut mechanically.

The front canvas covering the speakers is never completely transparent from an acoustic point of view.
For this reason the only way to obtain maximum performance from the appliance is to eliminate it.
We can build a false frame in which the original canvas has been installed. This frame attaches to the speaker panel with magnets.
In this way it is possible to detach it when you want to listen to music with maximum transparency and put it back in its place when the radio is at rest to protect the speakers from dust and to restore the original aesthetic appearance of the device.

All this translates into exciting dynamics, brilliance of sound, lack of canvas oscillations in the presence of low frequencies, making listening to this beautiful device very realistic and pleasant.