1. Sarrera
Eskerrik asko erosketagatik.asing the Blackstar St. James 50 EL34 Combo Ampargitzaile. Hau amplifier is designed to deliver exceptional tube tone in a lightweight and portable package. It features two footswitchable channels, EL34 power tubes, a 1x12 inch Celestion Zephyr speaker, and Blackstar's Cab Rig DSP technology for direct recording and XLR output. This manual provides essential information for safe and optimal use of your ampbiziagoa.
2. Segurtasun-argibideak
- Irakurri argibideak: Always read and understand all safety and operating instructions before using this product.
- Jarrai argibideak: Gorde jarraibide hauek etorkizuneko erreferentzia izateko.
- Kontuan izan abisuak: Jarraitu produktuaren eta funtzionamendu-argibideetako abisu guztiak.
- Ura eta hezetasuna: Do not use this apparatus near water. Avoid exposure to rain or moisture.
- Aireztapena: Ziurtatu aireztapen egokia dagoela. Ez blokeatu aireztapen-irekidurak.
- Beroa: Ez jarri bero-iturrien ondoan, hala nola erradiadoreen, bero-erregistroen, sukaldeen edo beste aparatuen ondoan (adibidez, ampberoa sortzen duten argitzaileak).
- Elikatze-kablearen babesa: Babestu korronte-kablea ibiltzeko edo atximur ez dadin.
- Garbiketa: Garbitu zapi lehor batekin bakarrik.
- Zerbitzua: Jarri zerbitzu-zerbitzu guztiak zerbitzu-pertsonal kualifikatuari. Zerbitzua behar da aparatua edozein modutan hondatu denean, hala nola, elikatze-kablea edo entxufea hondatuta dagoenean, likidoa isuri denean edo objektuak aparatura erori direnean, aparatua euria edo hezetasuna jasan duenean, ez du normalean funtzionatzen. , edo erori egin da.
- Goi Boltage: Hodia amplifiers operate at high voltages. Do not attempt to open the chassis or service the unit yourself.
3. Konfigurazioa
3.1 Paketatzea
Kendu arretaz amplifier from its packaging. Inspect for any signs of damage during transit. Retain the packaging for future transport or storage.
3.2 Energia-konexioa
- Ziurtatu ampLikidatzailearen etengailua 'OFF' posizioan dago.
- Connect the supplied IEC mains power cable to the MAINS INPUT on the rear panel of the ampbiziagoa.
- Plug the other end of the power cable into a suitable grounded mains outlet.
3.3 Guitar Connection
Connect your guitar to the INPUT jack on the front panel using a high-quality instrument cable.
3.4 Footswitch Connection
Connect the supplied footswitch to the FOOTSWITCH jack on the rear panel. This allows remote switching between channels and activating the Channel II Boost.
3.5 Cab Rig Output Connection
The Cab Rig output provides advanced DSP cabinet simulation for direct recording or connection to a PA system.
- USB audioa: Connect a USB cable from the USB port on the rear panel to your computer for direct recording and access to the Cab Rig software.
- XLR D.I.: Use an XLR cable to connect the XLR D.I. output to a mixing console or audio interface.
- Lerrokatu: Use a 1/4" jack cable to connect the LINE OUT to other line-level devices.
3.6 Effects Loop Connection
The effects loop allows integration of external effects pedals. Connect the SEND jack to the input of your effects unit and the RETURN jack from the output of your effects unit. Adjust the EFFECTS LOOP LEVEL switch for optimal signal matching.
4. Kontrolak eta funtzioak
4.1 Aurrealdeko panelaren kontrolak

Irudi honek goiko aldea erakusten du view of the Blackstar St. James 50 EL34 Combo Amplifier, highlighting the front panel controls. From left to right, you can see the Power and Standby switches, Master volume, Reverb knob, a three-band EQ (Treble, Middle, Bass), Volume II, Gain II, Channel II Boost switch, Volume I, Gain I, and the Input jack. The Power Reduction switch (50W/2W/SAG) is also visible.
- Sarrera: Konektatu zure gitarra hemen.
- CHANNEL I (Clean):
- GAIN I: Controls the input gain for Channel I.
- VOLUME I: Controls the overall output volume for Channel I.
- CHANNEL II (Overdrive):
- GAIN II: Controls the input gain for Channel II.
- VOLUME II: Controls the overall output volume for Channel II.
- CH. II BOOST: Activates a boost for Channel II, increasing gain and volume. Can be activated via footswitch.
- EQ (BASS, MIDDLE, TREBLE): Three-band equalizer to shape the amplifier's tone.
- Erreberbazioa: Controls the level of the built-in digital reverb effect.
- MAISU: Irteera bolumen orokorra kontrolatzen du ampbiziagoa.
- POWER REDUCTION (50W/2W/SAG): Aukeratzen du amplifier's output power (50W, 2W) or activates the 'SAG' mode for a more vintage, compressed feel.
- ITXARON: Aktibatu edo desaktibatzen du amplifier's standby mode. Always use when powering on/off.
- POTENTZIA: Main power switch for the ampbiziagoa.
4.2 Atzeko panelaren konexioak

This image shows the rear panel of the Blackstar St. James 50 EL34 Combo Amplifier. Visible connections include the MAINS INPUT, FUSE, SPEAKER OUTPUTS (1x16 Ohm, 1x8 Ohm, 2x16 Ohm), EFFECTS LOOP (SEND, RETURN, LEVEL switch), CAB RIG OUTPUTS (USB, XLR D.I., LINE OUT), and FOOTSWITCH input.
- SARRERA SARRERA: IEC power inlet for the mains cable.
- FUSE Mains fuse holder. Replace only with the specified type and rating.
- BOZLARIAREN IRTEERAK: Connect external speaker cabinets here. Ensure correct impedance matching (1x16 Ohm, 1x8 Ohm, 2x16 Ohm).
- EFFECTS LOOP (SEND, RETURN, LEVEL): For connecting external effects pedals. The LEVEL switch adjusts the loop's sensitivity.
- CAB RIG OUTPUTS (USB, XLR D.I., LINE OUT): Outputs with integrated cabinet simulation.
- OINETAILUA: Connect the supplied footswitch for remote control of channels and boost.
5. Funtzionamendu-argibideak
5.1 Piztea eta itzaltzea
- Ensure all volume controls are set to minimum.
- Flip the POWER switch to 'ON'. The power indicator will illuminate.
- Wait approximately 30-60 seconds for the tubes to warm up, then flip the STANDBY switch to 'ON'.
- To power off, flip the STANDBY switch to 'OFF', then the POWER switch to 'OFF'.
5.2 Kanal-aldaketa
Use the front panel channel switch or the footswitch to toggle between Channel I (Clean) and Channel II (Overdrive). The CH. II BOOST can be engaged for additional gain on Channel II.
5.3 Tonuaren moldaketa
Adjust the BASS, MIDDLE, and TREBLE controls to sculpt your desired tone. The REVERB knob adds a studio-quality digital reverb effect.
5.4 Potentzia murriztea
The POWER REDUCTION switch allows you to select between 50W and 2W output, or engage the 'SAG' mode. The 2W setting is ideal for lower volume playing, while 'SAG' mode provides a more dynamic and compressed tube response.
5.5 Cab Rig Functionality
The Cab Rig DSP offers advanced cabinet simulation. Connect via USB to your computer and use the dedicated Blackstar software to customize cabinet, microphone, and room simulations. This allows for versatile direct recording and live sound options without needing a physical speaker cabinet.
6. Mantentzea
6.1 Garbiketa
Garbitu amplifier's exterior with a dry, soft cloth. Do not use abrasive cleaners or solvents. Ensure no liquids enter the amptxasis lizatzailea.
6.2 Tube Replacement
The St. James 50 EL34 Combo uses vacuum tubes which have a finite lifespan. If you notice a decrease in performance, unusual noise, or loss of volume, tubes may need replacement. Tube replacement should only be performed by qualified service personnel due to high internal voltages. Refer to the specifications for tube types.
6.3 Biltegiratzea
Gorde amplifier in a dry, temperature-controlled environment, away from direct sunlight and extreme temperatures. If storing for extended periods, cover the amphautsetik babesteko lixibatzailea.
7. Arazoak
- Soinurik ez:
- Check power connections and ensure the POWER and STANDBY switches are 'ON'.
- Verify guitar and speaker cables are securely connected.
- Ensure all volume controls (Gain, Volume, Master) are not at minimum.
- Check the fuse on the rear panel. Replace if blown with the correct type.
- Poor Tone/Weak Sound:
- Egokitu EQ ezarpenak.
- Kable akastunak egiaztatu.
- Ensure correct speaker impedance matching if using an external cabinet.
- Tubes may be worn out. Consult a qualified technician for tube testing/replacement.
- Excessive Hum/Noise:
- Ziurtatu entxufearen lurreratze egokia.
- Saiatu beste korronte bat.
- Mugitu amplifier away from other electronic devices that may cause interference.
- Check for faulty tubes or internal components.
If problems persist, contact Blackstar customer support or a qualified service technician.
8. Zehaztapenak

This image shows the Blackstar St. James 50 EL34 Combo Amplifier from the front, highlighting its fawn Tolex covering and black grille cloth. The Blackstar logo is visible above the grille.
| Ezaugarri | Xehetasuna |
|---|---|
| Modelo zenbakia | STJ50EL34C |
| Irteera Wattage | 50 Watts (switchable to 2 Watts) |
| Potentzia-hodiak | EL34 |
| Hizlaria | 1 x 12-inch Celestion Zephyr |
| Kanalak | 2 (Clean, Overdrive with Boost) |
| Erreberbazioa | Studio-quality Digital Reverb |
| Efektuen Loop | Yes, with Level Control |
| Cab Rig irteera | USB Audio, XLR D.I., Line Out |
| Produktuaren neurriak | 24.47 x 20.9 x 13.97 hazbete |
| Elementuaren pisua | 1 pounds (Note: This weight seems incorrect for a tube combo amp and should be verified with manufacturer specifications) |
| Kolorea | Beltza |
9. Bermea eta Laguntza
For warranty information and technical support, please refer to the official Blackstar Amplifikazioa website or contact your authorized Blackstar dealer. Keep your proof of purchase for warranty claims.






