JTM 65

MK IV Plus



Output Tubes:

Preamp Tubes:


Input Hi:

Input Lo:





Class B 115/230V

30 Watt

2x KT66 TAD

V2 ECC83-C NOS + V1&V3 ECC83 Mullard

GZ34 Red Base

Treble (w/Channel-Patch Normal)

Normal (w/split of Hi-Treble Ch. for use with A/B Switcher)

Volume Treble, Volume Normal, Bass, Middle, Treble, Presence, Variac, Master Volume

8/16 Ohm Switch, 2 Outputs

orig. Black Levant



2.765,- (Net) / 3.290,- Euros (19%) on order!

incl. German VAT w/1year ltd. guarantee + 1year ltd. warranty

The Plus versions have had very big changes: 3 position bright cap switch w/2 different caps which influence the sound immensely, new capacitors in the signal path, NOS pre amp tubes and much more.

The new MK IV version opens up an unprecedented power reduction with a modified „Trainwreck“ Post Phase Inverter Master Volume WITHOUT any tone loss on the back and a real Varic on the front. All tubes are now from the expensive manufacturer Mullard, which make an incredible sound difference. The most significant change is the tone harmonization in single notes (also known as Plexi Ghost Notes). These 4 elementary innovations make the biggest difference in the history of Gladius Amps.

The JTM 65 strongly reminds of the JTM 45 from 1965 one of the best sounding amps ever!

This amp is known to be a slightly changed copy of the Fender Bassman from 1957. It definitely finds its strengths in its Clean and Crunchy sounds! It has a classic ECC83 preamp and as standard with all Gladius amps is the unique Variac power reduction! Only the world's best output- and power transformers (aged) are integrated, next to being hand-wired, equipped with state of the art tubes! An indispensable extra feature is the Channel-Patch that combines both channels (Hi Treble & Normal) without having to use a conventional patch cable. Its KT66 power tubes create a powerful tone, which covers everything from Blues up to Blues-Rock and is geared to the early sounds of Mark Knopfler and Eric Clapton.

The most transparent and organic JTM 45 ever.

The Gladius story began with further developments of Plexi Style Marshall amps from the late 60's. It was quickly recognized that a power reduction is absolutely necessary for today's customers. In order to be able to do without the unloved master volume, Gladius specialized in the development of a self-developed VARIAC system, which comes close to the sound of a voltage-reduced amp. The Mark II was born. The Mark III then got a rhythm and lead switch, which simulates the characteristics of a 50 watt and a 100 watt Plexis (Except the JTM 65). However, this was too much of the organic crunch for many customers and they also wanted a lossless master volume. Here Gladius decided on the PPIMV modified by Ken Fisher (Trainwreck), which enables the sound to be played at room volume without the loss of dynamics and without loss of gain. The development continued, however, because many customers wanted a more mid-oriented tone that could assert itself better than the Plexi tone even in the most fragile mixes. By changing many little things, the Mark IV was brought to life, which is also clearly more rocky in the JTM 67 and JTM 68. As the last big challenge, Gladius has dedicated himself to the topic "Bright Cap". The internet is full of comments on this topic, what one loves, another hates. One thing is certain, the topic of bright caps is very sensitive, because the sound characteristics change fundamentally. So Gladius has integrated a 3 Way Bright Switch into their now available MKIV PLUS models. This means that the middle position has the previously low Bright Cap, while position 2 has an extremely high value that sounds very, very rocky. Position 1 has the most treble and has a medium value, which can be described very nicely with the sound of AC/DC. Bone dry, very tight and very cranky in attack. Why the name Plus was chosen is obvious. The amp has received more updates than ever before in the history of Gladius JTM's. In addition to the bright caps, there were completely new capacitors in the signal path. Thanks also to the people at Tube Amp Doctor who developed the new Red Base Pre- and Power-tubes, which come very, very close to the sound of old tubes. So now a JTM's over the wide range from classic Plexi tone late 60's to modern JCM 800. There are no amps on the market that are as flexible as the Gladius JTM's without the well-known signal losses. That's Rock'n'Roll Ladies & Gent's.