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Effects and Pedals | Guitar effector | boost/drive effects
Used | Condition: Good
HTJ-WORKS  |  Product Code: 863299

HTJ-WORKS USED Valve Crystal Silver Top

$242.13
Shipping calculated at checkout.
Product Condition
Brand New Unused, as sold.
Mint Like new, no flaws.
Excellent Barely used, very minor wear.
Very Good Light wear, fully functional.
Good Visible wear, plays fine.
Fair Heavy wear, still playable.
FAQ

Description
The Valve Crystal is designed to be closer to an amplifier than an effects pedal.
The amplifier model is the JM signature model, which was instrumental in making the TR-AMP famous.
Only about 20 of these machines were produced worldwide, and they still command very high prices in the market today.
This integrated amplifier circuit is a faithful reproduction using vacuum tubes.

The circuit this is based on is the clean channel of the legendary DUMBLE amplifier.

The Valve Crystal uses the same integrated signal circuitry as amplifier construction, delivering a sparkling, clean sound.
Unlike many effects pedals bearing the "DUMBLE" name, this unit does not offer a flashy drive sound.

By combining this unit's brilliant, almost glass-shattering sound with a TS-style overdrive, I believe you can achieve the Dumble tone, SRV sound, and other sounds you might be imagining.

To achieve a compact chassis, a power transformer is not used; instead, a high voltage of approximately 250V is applied internally to drive the vacuum tubes.
I chose the JJ Electronics 12AX7 vacuum tube.
The internal components are meticulously crafted, using Orange Drop capacitors and DALE plate load resistors, just like building an actual amplifier.

The three tone controls and the natural reverberation produced by the vacuum tube amplification are superb.
This device does not have a footswitch bypass function due to its design.
In addition to the amplifier's input, we also recommend using the return input on studio amplifiers and the like.
If possible, connecting it to a power amplifier using 6L6 vacuum tubes will result in a specification closer to the actual unit.
This is highly recommended for those who are bothered by the digital sound produced by line connections when recording at home.


• This is the DC jack for connecting the power adapter.
Please use DC12V (500mA or higher recommended).
• ON/OFF power switch on the unit. Electricity flows to the vacuum tubes and circuitry (always turn it OFF after use and make sure the LED is off).
• INPUT: This is the input for guitar and signal.
• OUTPUT: Preamp output section (for connecting guitar amp, power amp, simulator, etc.)


- Adjust the GAIN gain.
• MASTER: Adjusts the overall volume. Please start from 0.
Passive type EQ
• TREBLE: Adjusts the high frequencies of the tone.
- MIDDLE: Adjusts the mid-range frequencies of the tone.
・BASS: Adjusts the low-frequency range of the tone.

The toggle switch removes the MID input frequency limit and boosts the midrange.
- DEEP: The high frequencies are cut, resulting in a thicker, rounder tone.
・BRIGHT: The overall tone will be brighter.
*All switches follow the EQ setting. Please set them together with the EQ.

Condition: No problems with use. Note: DC 12V (500mA or higher recommended)
Accessories: Box, instruction manual. Warranty: No warranty. Sold as is.

Payment & Security

Payment methods

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  • PayPal
  • Shop Pay
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Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

For orders exceeding Paypal’s transaction limit of 1 million yen, we will provide more details. For secure transactions, items will only be shipped to the address registered in your Paypal account.

Regarding detailed information and contact information to us, please check FAQ.

Please Note

The following information applies to international orders.

■ Condition

Items with “USED” in the product name are pre-owned and will be delivered as shown in the photos. Signs of wear may be present. All items are function-tested by our staff and rechecked before dispatch.

■ Stock

Many products are stocked across Ikebe stores in Japan. As a result, shipment may take several days. In-store sales may also cause items to sell out. If an item is unavailable, we will contact you promptly; in that case, the order will be canceled and any payment will be refunded.

■ Shipping

We ship via FedEx. Shipments are fully insured against damage or loss during transit.

  • Asia: 10–20 days (estimated)
  • North America & Oceania: 20–30 days (estimated)

Shipping costs are calculated based on the delivery address and confirmed at the time of dispatch.

■ Taxes & Duties

Import duties, taxes, and fees are the buyer’s responsibility and are not included in the item price or shipping cost. These fees are typically collected by the carrier upon delivery or at pickup. Please check with your country’s customs office for details before purchasing.

■ Other

We cannot declare a reduced item value or mark purchases as gifts.

* Warranty

Our product warranty is valid only within Japan.

* Voltage

All electrical products are intended for the Japanese market and are designed for 100 V operation.

*Regarding transportation

Based on the regulations of the shipping company, aviation laws, and the laws and import regulations of the destination country, we cannot ship dangerous goods or restricted items internationally.

Examples of such items include, but are not limited to, high-pressure gases (aerosol cans), flammable liquids (oils, paints, etc.), combustible materials, batteries, and other items classified as dangerous goods.

If your ordered items fall under these restrictions, we reserve the right to cancel your order or ship only certain items, at our discretion.

Furthermore, accessories and included items are also subject to these restrictions, so any items deemed ineligible for shipment will be removed before shipping. Please understand this in advance.

The final decision on whether or not to ship will be made by us based on the shipping company and relevant laws and regulations, and we cannot guarantee individual decisions in advance.

About us

Founded in 1975, Ikebe Music is one of Japan's largest general music stores.Thanks to its long history and proven track record, it has earned the trust of musicians and music fans not only in Japan but around the world.

Ikebe Music ships not only within Japan, but also overseas.As a well-known retailer of used musical instruments in Japan, we have a wide selection of used and vintage instruments.

We have a wide variety of unusual and rare instruments, so please take a look.Please note that we do not list new products, as our contracts with our suppliers prohibit international shipping.

About our stores

In Japan, we have about 30 stores in Tokyo (Ikebukuro, Shibuya, Akihabara) and Osaka.

We have just opened our flagship store, IKESHIBU (IKEBE SHIBUYA), in Shibuya, Tokyo, which brings together numerous musical instrument specialty stores and serves as a hub for entertainment culture.

Please be sure to stop by if you are visiting Japan.

Tokyo area
Osaka area
About Shipping

We carefully pack every item with protective materials to ensure it arrives safely.
The photos above show an example of how we securely pack a bass guitar for shipping.

Regarding handling of used products

All used products sold by Ikebe Musical Instruments Store are inspected, working, and maintained, ensuring their safety and security. We inspect each item individually for defects before shipping.

If there are any missing images, please contact us with your inquiry and let us know the angle and focus you need to better understand the condition of your item before ordering. We will respond after taking photos.

Because these are used items, we strive to provide detailed information about their condition so you can order with confidence.

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