Audition & Demo Listening
Q: Where is your demo studio located?
We are in Antipolo City. Look for “Reisong® Authorized Sole Distributor” in google map.
Tube Amplifiers
Q: Can I use other tubes?
Yes, that’s the fun part of tube amps. For example, you can replace the stock tube with Tesla or Philips EL34 for a change of tone. You may find out a particular brand of tube is best for a certain type of music for you.
Q: Is tube amp repairable?
Yes. That is the advantage of a tube amp. Parts are always available. But for a solid state amplifier or a digital amplifier, sometimes it is not possible to fix when some parts are not in production.
Q: How can I use tube amp for karaoke?
if you have a nice recording of background music, then Hifi can enhance your singing experience.
You can use a high-quality mixer so that the quality of background music won’t suffer much, but it is probably cheaper and of better quality to use an ordinary speaker and amplifier for the mic, and keep the hifi quality background music seperate.
Q: How many watt is your amp?
The most important is the speaker’s sensitivity. 85dB or above will be recommended.
Tube Amplifiers & Speakers
Q: Which speaker taps are better? 8 or 4ohm to use with a 6ohm rated speaker?
There will be no noticeable sonic difference. But connecting a lower impedance speaker to the amplifier (i.e., connecting 6 ohm speakers to the 8 ohm output transformer), in theory, it will increase the load of the amplifier, and it may overload and burn the amp. However, it never happened in our experience. But connecting 6 ohm speakers to the 4 ohm connectors of the amp is absolutely safe.
Q: What speakers would pair well with tube amps?
85dB or higher sensitivity.
Tube Amplifiers & Music Source
Q: Can I play music directly from my phone?
Yes. Just get a 3.5mm-to-RCA cable. Take note, please connect to the CD input, not the AUX.
Q: Why you don’t add bluetooth?
Bluetooth standard is fast changing, but a tube amp can last for decades. Mixing them together isn’t a good match. It’s better to buy a Bluetooth to RCA device separately.
Q: Does this need a preamp to operate a turntable?
Depends. Some turntable has a built in phono amp. If your turntable doesn’t have it, you will need a phono amp.
Troubleshooting
Q: It sounds flat.
Probably your speakers’ efficiency or sensitivity is not high enough. If you don’t know where to find speakers that are 90dB or higher, you may consider our K-4 speakers.
Q: The music sounds strange.
(1) Check the red and white RCA cable. Swapping the left and right channels can cause wrong positioning of the audio.
(2) If you are using a phone, please connect to the CD input, NOT the AUX.
Speakers
Q: How many watt is the K4 speakers?
Q: How many watt is the K4 speakers?
Forget the watt
90dB is a lot
There are two types of speakers because there are two types of amplifiers. (1) Vintage speakers for tube amplifiers, (2) other speakers (lower efficiency speakers) for non-tube amplifiers (solid state amplifiers).
Speakers designed for solid-state amplifiers have a wattage rating because solid-state amplifiers have much higher power output — ranging from 40w to 200w per channel. If you connect a 100w speaker to a 200w amplifier and you accidentally start your amplifier at the maximum volume, you will damage not only your eardrums but also the speakers. Or if you want to put your speaker very far away and play the amp at the maximum volume to rock the whole hall, the speakers will be damaged too. That’s why speakers have a wattage rating.
Speakers designed for vintage or tube amplifiers are different. Remember tube amplifiers have much lower power output. It means tube amplifiers will not reach the limit of the speakers. Therefore, speaker wattage is NOT important for a tube amplifier. Rather, speaker sensitivity or speaker efficiency is what we look for.
For example you used to have a 100w solid-state amp with 100w speakers, later you discovered that the speakers are 80dB. Now you got a new 8w tube amp and you want to play the music as loud as the solid-state amp, all you need is speakers that are 91dB or higher. Surely the tube amp will sound better than the solid-state amp.
If you are looking for speakers for a tube amp, let’s forget the watt, 90dB is a lot.
Q: Is there a woofer or a tweeter in the K4 speaker?
It does not need any tweeter or any woofer because the driver is a full-range driver.
That’s why it sounds very clean and detailed. No crossover is needed, no component is in the middle of the signal path to cause distortion.
Q: How many dB is the K4 speaker?
91dB. Perfect for a tube amp.
